If necessary, a process can be changed when it has started instances. In this case all started instances will be affected.

Adding steps (1):

• If new step will be added to process, in the active instances it will just be added into proper place:

• In the completed instances the new step also will become completed:

Deleting steps (2):

• If there are no instances that have this step active and the next path is unambiguous, step will just be deleted.
• If deletion of the step will cause instance to get another step active, the system will ask user for active step re-assigning (3) when process will be saved. User must select another step to make it active (4):

• After this, deleted step will disappear from all instances and newly assigned step will become active: