How to edit groups of set lists?

[RuBanjoGuy]

I'm sure I did this at some point, but I don't remember it. On my tablet (iPad), set lists from several past festivals show up grouped under labels (e.g. 2017, 2018).



I prefer to manage and edit set lists on my PC in the web interface. But in the Set Lists page of the web app, I don't see these groupings. I've searched help and the forums and I can't find anything on this feature. I don't find any way to manage these on the tablet either.

How do you create such groupings and how do you manage them once created.

Thanks in advance.

[arlo]

Past set lists are automatically archived into folders on mobile devices, but not on the website.