The UML diagrams for add, list, find, assign and schedule, all share very similar diagrams.
The red circled portion of the image below is shared amongst all of them(with some name changes).
It might be better to extract this portion out as one generic command UML diagram and have the actually different parts (circled in green below) be separate UML diagrams for their respective commands. This would minimise repetition and make the diagrams smaller and easier to read and understand.
The UML diagrams for add, list, find, assign and schedule, all share very similar diagrams.
The red circled portion of the image below is shared amongst all of them(with some name changes).
It might be better to extract this portion out as one generic command UML diagram and have the actually different parts (circled in green below) be separate UML diagrams for their respective commands. This would minimise repetition and make the diagrams smaller and easier to read and understand.