Moving role arrows

When you draw two relation arrows from the same submodel to an
association submodel, then they are drawn one on top of the other. To
separate them, you can:

1. drag the dot at either end of the arrow, to move that end up or down
   the submodel boundary; or
2. drag anywhere along the length of the relation arrow, to change the
   path taken by the arrow between the start and end dots.

When a relation arrow crosses several submodel boundaries then, as with
influence arrows, the effect of such changes are local to a given segment
of the relation arrow.

In: Contents >> Working with model diagrams >> Moving model diagram
elements