uploading a set of "things"?

[Mint Blancmanche]

tried uploading but you can only upload 1 thing, how do I submit a set? for example I want to upload my selection circles/shared.
also yay o nay these command buttons?

left original / right my version

 

[Ralle]

You upload one, then you can click “add resource” later to add more of the same thing / closely related thing.

 

[Mint Blancmanche]

thanks