In order to assign a program to one of your clients, you need to make sure that you have at least 1 day completed for every week you've added. If you add 7 weeks and only 6 of them have an exercise attached, then the program cannot be assigned.
Once you're ready to go with your program, simply select Assign Program in the top right of your screen. Doing this will immediately attach the program to your client's WeStrive App so they can begin using it.
Keep in mind, if you don't want your client to start a program yet OR if you are waiting for them to pay you, you can always schedule a program in advance.