Scenario - back button can't get back to specific slide where scenerio slide is. Do I need custom buttons?

I'm running into a problem where I setup a scenario slide (1) that says "If A then go to Next Slide. If B then go to slide 15". The problem is that on slide 15, if the user hits the built in back button it will take them to slide 14 instead of where I want them to initially go back to slide 1 where the scenario is again. Do I have to make my own buttons and code them or is there another solution?