Button action: goto frame then jumpto scene

I am new to this so I hope this request isn’t irritatingly straight forward to answer.

I would like to give a button an action to continue playing the current scene and then when it reaches a specified frame to jump to another scene.

i.e. if scene1 is stoped on frame 10, clicking button1 will move the playhead on to frame 20 and then jump to scene 2…

button2 to scene 3, button3 to scene 4 etc.

Thanks in advance,

qwertybloke