diff --git a/public/css/rm-groups.css b/public/css/rm-groups.css
index 4bc82ee6b..e7cbb2c95 100644
--- a/public/css/rm-groups.css
+++ b/public/css/rm-groups.css
@@ -58,6 +58,11 @@
     cursor: unset;
 }
 
+#rm_group_buttons textarea {
+    margin: 0px;
+    min-width: 200px;
+}
+
 #rm_group_members,
 #rm_group_add_members {
     margin-top: 0.25rem;
diff --git a/public/index.html b/public/index.html
index 352885649..98170d1a8 100644
--- a/public/index.html
+++ b/public/index.html
@@ -4360,24 +4360,44 @@
                                     </div>
                                     <div name="GroupStragegyAndOrder" id="rm_group_buttons" class="flex-container paddingLeftRight5 flex2">
                                         <div class="flex1 flexGap5">
-                                            <div class="flex-container flexnowrap width100p whitespacenowrap">
+                                            <label for="rm_group_activation_strategy" class="flexnowrap width100p whitespacenowrap">
                                                 <span data-i18n="Group reply strategy">Group reply strategy</span>
-                                            </div>
+                                            </label>
                                             <select id="rm_group_activation_strategy">
                                                 <option value="0" data-i18n="Natural order">Natural order</option>
                                                 <option value="1" data-i18n="List order">List order</option>
                                             </select>
                                         </div>
                                         <div class="flex1 flexGap5">
-                                            <div class="flex-container flexnowrap width100p whitespacenowrap">
+                                            <label for="rm_group_generation_mode" class="flexnowrap width100p whitespacenowrap">
                                                 <span data-i18n="Group generation handling mode">Group generation handling mode</span>
-                                            </div>
+                                            </label>
                                             <select id="rm_group_generation_mode">
                                                 <option value="0" data-i18n="Swap character cards">Swap character cards</option>
                                                 <option value="1" data-i18n="Join character cards (exclude muted)">Join character cards (exclude muted)</option>
                                                 <option value="2" data-i18n="Join character cards (include muted)">Join character cards (include muted)</option>
                                             </select>
                                         </div>
+                                        <div class="flex1 flexGap5" title="Inserted before each part of the joined fields.">
+                                            <label for="rm_group_generation_mode_join_prefix" class="flexnowrap width100p whitespacenowrap">
+                                                <span data-i18n="Join Prefix">Join Prefix</span>
+                                                <div class="fa-solid fa-circle-info opacity50p"
+                                                    data-i18n="[title]When 'Join character cards' is selected, all respective fields of the characters are being joined together.&#13;This means that in the story string for example all character descriptions will be joined to one big text.&#13;If you want those fields to be separated, you can define a prefix or suffix here.&#13;&#13;This value supports normal macros and will also replace {{char}} with the relevant char's name and &lt;FIELDNAME&gt; with the name of the part (e.g.: description, personality, scenario, etc.)"
+                                                    title="When 'Join character cards' is selected, all respective fields of the characters are being joined together.&#13;This means that in the story string for example all character descriptions will be joined to one big text.&#13;If you want those fields to be separated, you can define a prefix or suffix here.&#13;&#13;This value supports normal macros and will also replace {{char}} with the relevant char's name and &lt;FIELDNAME&gt; with the name of the part (e.g.: description, personality, scenario, etc.)">
+                                                </div>
+                                            </label>
+                                            <textarea id="rm_group_generation_mode_join_prefix" class="text_pole wide100p textarea_compact autoSetHeight" maxlength="2000" placeholder="&mdash;" rows="1"></textarea>
+                                        </div>
+                                        <div class="flex1 flexGap5" title="Inserted after each part of the joined fields.">
+                                            <label for="rm_group_generation_mode_join_suffix" class="flexnowrap width100p whitespacenowrap">
+                                                <span data-i18n="Join Suffix">Join Suffix</span>
+                                                <div class="fa-solid fa-circle-info opacity50p"
+                                                    data-i18n="[title]When 'Join character cards' is selected, all respective fields of the characters are being joined together.&#13;This means that in the story string for example all character descriptions will be joined to one big text.&#13;If you want those fields to be separated, you can define a prefix or suffix here.&#13;&#13;This value supports normal macros and will also replace {{char}} with the relevant char's name and &lt;FIELDNAME&gt; with the name of the part (e.g.: description, personality, scenario, etc.)"
+                                                    title="When 'Join character cards' is selected, all respective fields of the characters are being joined together.&#13;This means that in the story string for example all character descriptions will be joined to one big text.&#13;If you want those fields to be separated, you can define a prefix or suffix here.&#13;&#13;This value supports normal macros and will also replace {{char}} with the relevant char's name and &lt;FIELDNAME&gt; with the name of the part (e.g.: description, personality, scenario, etc.)">
+                                                </div>
+                                            </label>
+                                            <textarea id="rm_group_generation_mode_join_suffix" class="text_pole wide100p textarea_compact autoSetHeight" maxlength="2000" placeholder="&mdash;" rows="1"></textarea>
+                                        </div>
                                     </div>
                                     <div id="GroupFavDelOkBack" class="flex-container flexGap5 spaceEvenly flex1">
                                         <div id="rm_button_back_from_group" class="heightFitContent margin0 menu_button fa-solid fa-left-long"></div>
diff --git a/public/scripts/group-chats.js b/public/scripts/group-chats.js
index 2b5267ff2..36f324b94 100644
--- a/public/scripts/group-chats.js
+++ b/public/scripts/group-chats.js
@@ -9,9 +9,11 @@ import {
     saveBase64AsFile,
     PAGINATION_TEMPLATE,
     getBase64Async,
+    resetScrollHeight,
+    initScrollHeight,
 } from './utils.js';
 import { RA_CountCharTokens, humanizedDateTime, dragElement, favsToHotswap, getMessageTimeStamp } from './RossAscends-mods.js';
-import { loadMovingUIState, sortEntitiesList } from './power-user.js';
+import { power_user, loadMovingUIState, sortEntitiesList } from './power-user.js';
 
 import {
     chat,
@@ -351,6 +353,30 @@ export function getGroupCharacterCards(groupId, characterId) {
         return null;
     }
 
+    /** Runs the macro engine on a text, with custom <FIELDNAME> replace @param {string} value @param {string} characterName @param {string} fieldName @returns {string} */
+    function customBaseChatReplace(value, fieldName, characterName) {
+        // We should do the custom field name replacement first, and then run it through the normal macro engine with provided names
+        value = value.replace(/<FIELDNAME>/gi, fieldName);
+        return baseChatReplace(value.trim(), name1, characterName);
+    }
+
+    /** Prepares text with prefix/suffix for a character field @param {string} value @param {string} characterName @param {string} fieldName @returns {string} */
+    function replaceAndPrepareForJoin(value, characterName, fieldName) {
+        value = value.trim();
+        if (!value) {
+            return '';
+        }
+
+        // Prepare and replace prefixes
+        const prefix = customBaseChatReplace(group.generation_mode_join_prefix, fieldName, characterName);
+        const suffix = customBaseChatReplace(group.generation_mode_join_suffix, fieldName, characterName);
+        const separator = power_user.instruct.wrap ? '\n' : '';
+        // Also run the macro replacement on the actual content
+        value = customBaseChatReplace(value, fieldName, characterName);
+
+        return `${prefix ? prefix + separator : ''}${value}${suffix ? separator + suffix : ''}`;
+    }
+
     const scenarioOverride = chat_metadata['scenario'];
 
     let descriptions = [];
@@ -372,10 +398,10 @@ export function getGroupCharacterCards(groupId, characterId) {
             continue;
         }
 
-        descriptions.push(baseChatReplace(character.description.trim(), name1, character.name));
-        personalities.push(baseChatReplace(character.personality.trim(), name1, character.name));
-        scenarios.push(baseChatReplace(character.scenario.trim(), name1, character.name));
-        mesExamplesArray.push(baseChatReplace(character.mes_example.trim(), name1, character.name));
+        descriptions.push(replaceAndPrepareForJoin(character.description, character.name, 'Description'));
+        personalities.push(replaceAndPrepareForJoin(character.personality, character.name, 'Personality'));
+        scenarios.push(replaceAndPrepareForJoin(character.scenario, character.name, 'Scenario'));
+        mesExamplesArray.push(replaceAndPrepareForJoin(character.mes_example, character.name, 'Example Messages'));
     }
 
     const description = descriptions.filter(x => x.length).join('\n');
@@ -1093,6 +1119,8 @@ async function onGroupGenerationModeInput(e) {
         let _thisGroup = groups.find((x) => x.id == openGroupId);
         _thisGroup.generation_mode = Number(e.target.value);
         await editGroup(openGroupId, false, false);
+
+        toggleHiddenControls(_thisGroup);
     }
 }
 
@@ -1105,6 +1133,15 @@ async function onGroupAutoModeDelayInput(e) {
     }
 }
 
+async function onGroupGenerationModeTemplateInput(e) {
+    if (openGroupId) {
+        let _thisGroup = groups.find((x) => x.id == openGroupId);
+        const prop = $(e.target).attr('setting');
+        _thisGroup[prop] = String(e.target.value);
+        await editGroup(openGroupId, false, false);
+    }
+}
+
 async function onGroupNameInput() {
     if (openGroupId) {
         let _thisGroup = groups.find((x) => x.id == openGroupId);
@@ -1270,6 +1307,14 @@ async function onHideMutedSpritesClick(value) {
     }
 }
 
+function toggleHiddenControls(group, generationMode = null) {
+    const isJoin = [group_generation_mode.APPEND, group_generation_mode.APPEND_DISABLED].includes(generationMode ?? group?.generation_mode);
+    $('#rm_group_generation_mode_join_prefix').parent().toggle(isJoin);
+    $('#rm_group_generation_mode_join_suffix').parent().toggle(isJoin);
+    initScrollHeight($('#rm_group_generation_mode_join_prefix'));
+    initScrollHeight($('#rm_group_generation_mode_join_suffix'));
+}
+
 function select_group_chats(groupId, skipAnimation) {
     openGroupId = groupId;
     newGroupMembers = [];
@@ -1305,6 +1350,10 @@ function select_group_chats(groupId, skipAnimation) {
     $('#rm_group_hidemutedsprites').prop('checked', group && group.hideMutedSprites);
     $('#rm_group_automode_delay').val(group?.auto_mode_delay ?? DEFAULT_AUTO_MODE_DELAY);
 
+    $('#rm_group_generation_mode_join_prefix').val(group?.generation_mode_join_prefix ?? '').attr('setting', 'generation_mode_join_prefix');
+    $('#rm_group_generation_mode_join_suffix').val(group?.generation_mode_join_suffix ?? '').attr('setting', 'generation_mode_join_suffix');
+    toggleHiddenControls(group, generationMode);
+
     // bottom buttons
     if (openGroupId) {
         $('#rm_group_submit').hide();
@@ -1338,6 +1387,11 @@ function select_group_chats(groupId, skipAnimation) {
         $('#rm_group_automode_label').hide();
     }
 
+    // Toggle textbox sizes, as input events have not fired here
+    $('#rm_group_chats_block .autoSetHeight').each(element => {
+        resetScrollHeight(element);
+    });
+
     eventSource.emit('groupSelected', { detail: { id: openGroupId, group: group } });
 }
 
@@ -1796,6 +1850,10 @@ function doCurMemberListPopout() {
 }
 
 jQuery(() => {
+    $(document).on('input', '#rm_group_chats_block .autoSetHeight', function () {
+        resetScrollHeight($(this));
+    });
+
     $(document).on('click', '.group_select', function () {
         const groupId = $(this).attr('chid') || $(this).attr('grid') || $(this).data('id');
         openGroupById(groupId);
@@ -1823,6 +1881,8 @@ jQuery(() => {
     $('#rm_group_activation_strategy').on('change', onGroupActivationStrategyInput);
     $('#rm_group_generation_mode').on('change', onGroupGenerationModeInput);
     $('#rm_group_automode_delay').on('input', onGroupAutoModeDelayInput);
+    $('#rm_group_generation_mode_join_prefix').on('input', onGroupGenerationModeTemplateInput);
+    $('#rm_group_generation_mode_join_suffix').on('input', onGroupGenerationModeTemplateInput);
     $('#group_avatar_button').on('input', uploadGroupAvatar);
     $('#rm_group_restore_avatar').on('click', restoreGroupAvatar);
     $(document).on('click', '.group_member .right_menu_button', onGroupActionClick);