You can use multi-path workflows to specify separate actions on different values of a picklist.
For example, consider the Sales Stage field in the Deal module. You can set up a single action for each of the field’s values such as Negotiation, Closed Won, Closed Lost, etc. Similarly, you can set up different actions when the Assigned To field of a record has different users' names.
To learn more about multi-path workflows, click here.