have you looked into the manual of the plugin?
Hompege of the plugin:
2013/9/6 Old_Seafarer <for...@gimpusers.com>:
> While there are hundreds of references on the internet, Gimp sites and YouTube
> referring to the indexprint plugin, not ONE tells me what to do with it once
> downloaded and installed! I can see it listed as an installed plugin under my
> Help menu, but nothing on the menu bars that even hint of its function. "Batch
> Manipulation?" Tried that. Gimp manual search (RTFM)? Tried that. Youtube
> tutorials? Not a chance.
> Okay wise ones... How do I create a contact sheet in Gimp?
> Old_Seafarer (via www.gimpusers.com/forums)
> gimp-user-list mailing list
> List address: firstname.lastname@example.org
> List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
gimp-user-list mailing list
List address: email@example.com
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list