In the relationship graph you can select all TO's and resize them to the largest width or smallest and they all will do as commanded.
However there are three disclosures states of each TO (Only 2 for notes)
- Fully Open Showing all fields (expanded view for notes)
- Key fields (predicates) only
- Title only. (notes shows one line)
If you have selected a section or all elements on the graph there is no way to get the selected set to sync to the same disclosure state, they will indepenedly cycle each state, when clicking the box.
Perhaps if a modifier key was held down when clicking the box all selected items first sync to a single state then subsequent clicks will cycle thru the states.