We are running Prominence II as the modpack and it can be played through the ATLauncher.
You can get the launcher here if you do not have it.

Once you have the launcher you need to add it by following the below steps: - Click on "Packs".
- Click "CurseForge" on the left side of the window.
- Type "Prom" in the search bar, and hit enter.
- Click the "New Instance" button for the modpack "Prominence II [RPG]". Currently running on v2.7.7hf(1.20.1).
- Once downloaded, you can start the pack and play on the server like normal.


To help make the modpack run better you may want to change some settings of the modpack. To achieve this you need to click on the "Settings" button on the modpack on the "Instances" tab.
You want to change the MAX memory to at least 4GB (4096) to be able to run the pack.

Make sure your Java install is upto date and to help java run a little better you can add the following java parameters to the pack:
-XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M