The Process Type Actions page lets you create new process types, edit and delete existing process types, and add actions to process types. Process type actions refer to actions that appear in the process view page of certain processes. After you publish a workflow process, you can declare it as a process type, and then you can add process type actions to it. For example, if you want a process of a certain type to have a Send Email action, add this action as a process type action. This action then appears in the process view page of all running instances of the specified process type.
Process types refer to classifications of processes. You can set a process type for processes in the service catalog. For example, if you have a Vacation Request process and a Hardware Request process, you can create a process type called Request. Then, you can add these two processes to the Request process type. In the Process Type Actions page, you can add actions to that process type (for example, Send Email).