SillyTavern/public/scripts/extensions/vectors/settings.html

<div class="vectors_settings">
    <div class="inline-drawer">
        <div class="inline-drawer-toggle inline-drawer-header">
            <b>Vector Storage</b>
            <div class="inline-drawer-icon fa-solid fa-circle-chevron-down down"></div>
        </div>
        <div class="inline-drawer-content">
            <label class="checkbox_label" for="vectors_enabled">
                <input id="vectors_enabled" type="checkbox" class="checkbox">
                Enabled
            </label>
            <label for="vectors_source">
                Source
            </label>
            <select id="vectors_source" class="select">
                <option value="local">Local</option>
                <option value="openai">OpenAI</option>
            </select>
        </div>
    </div>
</div>