Distractor/Monitor Task

Hello All -

I am looking to create a distractor monitor task for experiment. From what I have heard I will have to have a paper distractor task and have the monitor task on the computer screen. However, ideally I would like to be able to have the distractor task on the screen and stay until the participant would like to check on the monitor task; so essentially I would need to have a switch screen button in the corner (and the number of times pressed would have to be recorded) that they can switch back and forth at their own discretion.

Anyone with experience? :-P

Cheers!

Eric