You do want to do the same exercises for a while so you can improve with them and monitor your progress. But, of course you want to change it up at least every 6-8 weeks, but you do want to do at least some of the same exercises for a little while. Depending on what options you chose, you may have a longer workout or a shorter workout. If you don't like the one you have, you can click the swap workout button to choose a different type of workout. Otherwise, you can add your own strength exercises using the add strength exercises button.
I hope that helps!