Hey guys! I'm sure this is something simple, but how would I go about writing in my script so that step two of the EE cannot be accessed until step one is completed?

Hey guys! I'm sure this is something simple, but how would I go about writing in my script so that step two of the EE cannot be accessed until step one is completed?

 I don't know how it works for bo3 but in waw you have something like "waittill("notification");

If you use that two times in a method you are able to order the EE steps.