When you visit the Manage Packages page, you will see a layout like this.
Guide to Icons
ON
When turned ON, the CRT package is activated, and its 3 songs play randomly for callers. If there are multiple active CRT packages, the songs from all packages play randomly.
OFF
Package is deactivated, no CRT will play.
Remove
Unsubscribe this Package. All CRT in this Package will not play to callers.