23b3ae1d_ith_Apple_Keynote___Keynotopia__Purpose
[Menu Item] Unlock [Shortcut] CMD+SHIFT+L [Purpose] 
Unlock selected objects or groups. You will notice that locked objects, when selected, will have “x” markers around their edges, instead of the square marker that enables you to resize them.
How To create interactive prototypes with Apple Keynote | Keynotopia
Purpose