You can align the partitions vertically or horizontally
in activity diagrams. By default, the partitions are aligned vertically.
An activity diagram must be open in the diagram
editor and must contain at least one partition.
To change the alignment of the partitions, complete
one of the following steps:- To align the partitions horizontally, right-click
the activity name editor and click Vertical Partition Alignment to
remove the checkmark.
- To align the partitions vertically, right-click the activity
name editor and click Vertical Partition Alignment to
add the checkmark.