You can unlock a scene or any locked element within a scene from an explorer. With the exception of parameters, you must unlock from the node that owns the lock (where the lock was originally applied: see Locking Scene Elements).
You can progressively unlock scene elements by level.
In an explorer, select the lock owner (the node on which you originally applied the lock).
Choose Locks and deactivate the specific lock level menu item: Node Topology/Hierarchy Locked, Animation Locked, or Value Locked.
If the lock level menu items are not available, this means that the selected node/object has inherited the lock and you have not selected the lock owner.
You unlock parameters the same way you would unlock any other scene element. What makes unlocking parameters different is that they are the only element that can be unlocked in node mode. When you specifically unlock a parameter, the parameter becomes the owner of the lock information.
A parameter can inherit a lock from the hierarchy above it, but you can always go back and remove a lock level or unlock all levels just for that parameter.
From the Model toolbar, choose Get Primitive Polygon Mesh Grid.
In an explorer, select the Grid object node.
Set the explorer scope to Scene Root and the filter to All Nodes or All + Animatable Params (as needed) to display parameters.
The word (Lock) is displayed beside the node. All its children nodes, including its parameters, inherit the lock and display the (Lock) label as well.
Expand the Grid down to the Polygon Mesh Geometry U and V Subdiv. parameters.
Right-click each parameter and choose Locks Unlock All Levels.
The Grid object is locked at all levels, except for its U and V Subdiv. parameters.
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