I have created two process in one entity named TestEntity
Process1:
Process2:
I have an OptionSet named "Type" values "Project" and "Contract" I want to change business process on optionSet change event. By default Process1 shows on TestEntity.
If you want to run a particular business process based on option set value, then you can use javascript to call the business process. You can add the java script on change or on save of record.