Call Center Work Force Management

Need some help and I am not sure where to start.

I run a small center with 20 employees. I am trying to be more efficient with my scheduling of the employees to be able to handle as many calls as possible. I have arrival patterns and the 20 employees. Is there a formula/template that I can use/see that will enable me to schedule my employees as efficiently as possible? They all work 40 hours and seven of them work 10 hour shifts. I want to be able to cover all seven days from 7am-midnight.

Attached is what I have for arrival patterns.

Any help is appreciated.