Groups let you rotate thumbs and text separately, or rotate different thumb sets per niche. Three groups exist by default, though most sites use only one.

In group settings, set: - Shift Period (hours) - Time between rotations - Shift Period (Clicks) - Number of clicks before rotation

See About Rotation for details.

Reset all stats on reset - Reset statistics when removing thumbs after a shift. (Recommendation: disable this.)

Action on shift – Choose what happens during rotation:

- Delete not popular/add from Pull - Remove lowest-performing thumbs, add new ones from the pool. Good if you constantly add content. - Not popular to Old/add from Pull - Move low-performers to “old” state, add new thumbs from pool to active. - Not popular to Pull/add from Pull - Move low-performers to pool (resetting stats), promote some from pool to active. - Move not popular objects to other group - Transfer low-performers to another group's pool. - Move most popular objects to other group - Transfer top performers to another group.

Most common: “Not popular to Old/add from Pull”

New objects settings - Custom values for new thumbs (similar to Rotation Settings, but per-group).

Thumb Settings (for grabber) - Thumbnail sizes.

To change custom variables for groups (like updating multiple groups at once), use Mass Add instead of regular massedit. If you add a group with an existing name, the script updates that group instead of skipping it. Just add the group with the same name but different custom variable data.