Removing a cycle from the calendar

Bit new to this malarkey! I have managed to set up my schedule and completed a cycle in my calendar but it is wrong does anyone know how I can remove the cycle from the calendar and start again? I've tried highlighting the cycle on the calendar and clicking clear cycle but nothing happens?!

Hello Sslater,
If you scroll down the calendar on your left hand side you'll see the 'Erase calendar dates'.
'Clear cycle' is only meant for erasing the cycle you're about to configure, and once cleared it will let you select new cycles.
Here's a short video on those cycles , I guess you've seen it already ! Do let me know if something is not clear enough