easy locking of mind maps


As described in this question: Cannot lock a mind map, I would like to be able to lock mind maps easily.

Generally I just need to lock the whole mind-map, e.g. when sharing the outcome of a workshop for any final contributions. 

Perhaps it would also make sense to be able to lock a node, and thereby lock all child nodes, but generally I find myself just needing to lock the whole thing.

My issue is not being able to lock a shape overlaid onto a "mind map" because I want to put a square block over a word but if I add any new entries to the map it auto-shifts the board even if I lock it. Alternatively, if the mind map had a border option that would solve my problem quicker!