I can't move items from one shared with me folder to another shared with me folder?

Problem

I can't move items from one shared with me folder to another shared with me folder?

Solution

Correct. This is a feature of the system and is not able to be configured(see below).

To Share a document - Right-click on the item's row and choose Share from the pop-up menu:

Right-clicking a file as an owner - context menu

 
Note: If this menu option is not available and the Owner (after the item's name) does not indicate 'Me', then it is not possible to share the item since you do not own the item (and therefore cannot share it).