Quick Install

Download the latest JAR from releases - you want the one named ServerUtilities-number.jar, not the dev or sources. Place it in the /mods folder on your server AND client (if single player, on client only).

Once loaded, you will find new UI options in your inventory screen:

For single player, loading chunks is the most important, and you can click that icon and then shift-click (and drag) to designate chunks to load. Right click to unload and unclaim.

The ServerUtilities configuration files are found in .minecraft/serverutilities and it will migrate from FTBU for you. The most likely thing you want to change is found in .minecraft/serverutilties/server/ranks.txt where you can control how many chunks can be loaded. .minecraft/serverutilities/serverutlities.cfg is where you can disable backups if you have another backup solution.

For server admins, there is much more that ServerUtilities can do, refer to the FTBU documentation for now.