You can hide track groups from appearing in the track group selector on the main interface by using the Hidden checkbox in the Manage Track Groups window. This is useful for track groups that you want to keep in the system but don't need regular access to.

To hide a track group, go to Manage > Track Groups and locate the track group you want to hide. Check the Hidden checkbox next to that track group, then click Apply or OK to save the changes. The track group will no longer appear in the track group selector dropdown on the main PlayIt Live interface, but it will still exist in the system and can be used for scheduling purposes in clocks and playout policies.