You can't. Because [DNSCrypt](https://github.com/DNSCrypt/dnscrypt-protocol/blob/master/DNSCRYPT-V2-PROTOCOL.txt) is just a specification.
That specification has been implemented in software such as [unbound](https://www.unbound.net/), [dnsdist](https://dnsdist.org/), [dnscrypt-wrapper](https://github.com/cofyc/dnscrypt-wrapper) and [dnscrypt-proxy](https://github.com/jedisct1/dnscrypt-proxy).
dnscrypt-proxy is a flexible DNS proxy. It runs on your computer or your router, and can locally block unwanted content, reveal where your devices are silently sending data to, make applications feel faster by caching DNS responses, and improve security and confidentiality by communicating to upstream DNS servers using secure channels.
1) Modify the [`dnscrypt-proxy.toml`](https://raw.githubusercontent.com/jedisct1/dnscrypt-proxy/master/dnscrypt-proxy/dnscrypt-proxy.toml) configuration file according to your needs.
2) Make sure that nothing else is already listening to port 53 on your system and run (in a console with elevated privileges on Windows) the `dnscrypt-proxy` application. Change your DNS settings to the configured IP address and check that everything works as expected. A DNS query for `resolver.00f.net` should return one of the chosen DNS servers instead of your ISP's resolver.
The current 2.0.0 alpha version includes all the major features from dnscrypt-proxy 1.9.5 (support for dnscrypt v2, synthetic IPv6 responses, logging, blocking, forwarding and caching), with improved reliability, flexbility, usability and performance.
| DNS caching | Yes, with ugly hacks for DNSSEC support | Yes, without ugly hacks |
| EDNS support | Broken with custom records | Yes |
| Asynchronous filters | Lol, no, filters block everything | Of course, thanks to Go |
| Session-local storage for extensions | Impossible | Yes |
| Multicore support | Nonexistent | Yes, thanks to Go |
| Efficient padding of queries | Couldn't be any worse | Yes |
| Multiple local sockets | Impossible | Of course. IPv4, IPv6, as many as you like |
| Automatically picks the fastest servers | Lol, it supports only one at a time, anyway | Yes, out of the box |
| Official, always up-to-date pre-built libraries | None | Yes, for many platforms. See below. |
| Automatically downloads and verifies servers lists | No. Requires custom scripts, cron jobs and dependencies (minisign) | Yes, built-in, including signature verification |
| Advanced expressions in blacklists (ads*.example[0-9]*.com) | No | Yes |
| Forwarding with load balancing | No | Yes |
| Built-in system installer | Only on Windows | Install/uninstall/start/stop/restart as a service on Windows, Linux/(systemd,Upstart,SysV), and macOS/launchd |
