Functions:

1. Set Or Create Active Map for multiple objects

   • Sets a UV map active in each selected object. If a map with the same name doesn't exist, it'll be created automatically.

2. Delete Active Map for multiple objects

   • Deletes a UV channel with a matching name in all selected objects.

3. Set Active Render Map for multiple objects

   • Sets a UV channel as the active render channel in all selected objects.

4. Copy Unique

   • Copies all unique named channels in selection, to each selected object.

5. Sync Layers Order

   • Tries to match order of layers in each object to the active object.

6. Move Up / Down

   • Moves a layer in the selected object up or down in the stack, active object only, use sync order for other objects.

Initially I glued this addon together to make lightmapping complex scenes easier by avoiding manually setting the active layer for each object, it has since became an irreplaceable tool.

Works with Blender 3.4

Installation:

1. Download the addon .zip file
2. under Blender Preferences -> Addons, hit "Install" and choose the .zip file.