Join / Unjoin

I know how to join multiple items together (Ctrl+J), but is there a way to un-join these objects at a later time. If there is an alternate way to group the objects to make later ungrouping possible, I’d also like to hear about that. Thanks.

Put your mousecursor on the part you want to seperate in editmode, hit ‘L’ (link) and ‘P’ to seperate.

You could parent them all to an empty.

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or you can use any other selection tool you like

(P seperates the selection into another object)

Very helpful and just what I was looking for, thanks.