Due to a limitation in CATIA V5 it is impossible for users to place multiple orthogonal leaders for geometrical tolerances.

The workaround consists in:

• Hold down Shift key before selecting the first reference of the geometrical tolerance, this will create the first leader.
• Right click on the tolerance and select "add new leader" and select other reference (without holding Shift).
• Right-click on the extremity of the arrow (yellow mark) and select "Add a Breakpoint", this will add yellow mark on the leader where the breakpoint is located.
• Hold down the Shift key and try to move the newly created Breakpoint (new yellow mark).
• The breakpoint will jump to the main geometrical element leader and it looks like a new perpendicular leader.
• You can right-click on the Breakpoint again and select "Rigid", this will help to keep it in place.

Each time you want to adjust the perpendicularity of the leader created via the breakpoint, move it with pressed down Shift key and the point will adjust perpendicular to the main geometrical element leader.