Pick 6/ Pick 5 Lottery Wheels

Hello I am building a lottery website. I need two wheels with the following specifications or something very close to it, let me know if you can do it and how much time you need, : 1. [pick 6] Wheel 20 numbers, generate less than 50 tickets with guarantee of 6 if 6. 2. [pick 5] Wheel 20 numbers, generate less than 25 tickets with guarantee of 5 if 5.