You can bound it with your own rules :
- Set it invisible when inactive, then on touched it, if it visible, you do the action
- Do the same if you want to use Opacity
- Have global variable to cover all your action
Ex : gamestate = 0 --> you can touch Start Only
gamestate = 1 --> you can touch Continue Only
- Or any rule which you can set to make you feel convenience when doing your game.
Cheers.