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UV sets selection mode active
Once you are in First select your object(s), either by clicking on them in the viewport (Shift to add to the selection, Ctrl to remove from selection), or by choosing them in the Object list panel. Switch to UV sets selection mode, select the object(s) and then from the UV Sets section in the Object Parameters panel, selection select one of the UV sets from the list. A green outline of the UV set will appear in the viewport as well as a transform gizmo allowing you to move/rotate/scale it. Note that all the UV sets of all the selected objects will appear in the UV Sets list.
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