If a flow or squirt arrow has a "kink",you can adjust the position where this is drawn by clicking on the middle section, well away from the bowtie symbol, and dragging it along the length of the rest of the flow. In other cases, you cannot change the actual path taken by a flow arrow. However, you can always change the position of the valve (bowtie or target) symbol on the arrow, by dragging it along the arrow in the desired direction. You can also move the cloud associated with flows or squirts, generating a corresponding re-alignment of the route.
If you draw two flows between the same two compartments in the same direction, then the second one may partially overlap the first, including the valve symbol. You can move one or both valve symbols or kinks to enable each to be handled separately.
If you draw two flows between the same two compartments in opposite directions, then the flows may partially overlap, but the valve symbols will not, so that you do not have to move them for each one to be visible.
In: Contents >> Working with model diagrams >> Moving model diagram elements