Greetings becsp1234,
As you’ve noted, EndNote for iPad doesn’t display custom group set names. Typically, we’d suggest adding the name of your group set to the beginning of the associated group names. For instance, if you had a group set called ‘Group Set A’ and that group set contained five groups, we’d suggest naming these groups “Group Set A Group 1”, “Group Set A Group 2”, “Group Set A Group 3”, “Group Set A Group 4”, “Group Set A Group 5”. Of course this is not required, but doing so would still allow you to cluster groups together within EndNote for iPad and within EndNote online itself.