Control procedure program code

Hello, 

I'd like to understand what value should be set if I would like to have a sequence to execute the process action?

From what I know, if the value of the process action is set to 0, it means the action will not be executed.

-- Follow-up process actions. The number assigned to them will determine the order in which they are (depth first) executed. A value of null, 0 or a negative value means the process action will not be executed. 

Here’s an example of my process: in my decision workflow, I want the "Send User" action to execute first, followed by the "Email Connector" or vice versa, what is the depth first order number? where to view this?

should I put 1 being the first one to be executed and 2 is the second? and so on...

code snippet on decision process to check:

        if @notification_type = 'both'           begin               set @execute_user_notification_stop  = 0               set @Send User = 1               set @Email Connector = 2          end

Thank you in advance