Clock/Timer

There is already a clock with date on the bottom right.
Is there anyway to create a soft key CLOCK with the ability to: Countdown from a determined number; timer (with possible LAP function); and can create a larger clock for the window?

When programming or even running a show live. You won't have to rely on a phone or secondary device to answer any timing questions that occur immediately. 

There is a rumor of using Midi and a 3rd party program to get around it. 
For those of use who don't want to use Midi for this, a soft key would be the easy answer. 

Thanks!