How to remove Time and labour access from employees ?

Hello,

I am hoping that someone has come across on how to remove incorrectly enrolled employees ( was done by scheduled process) to submit time cards?

More details:

We enrolled group of employees for time and labour via running scheduled process " Evaluate group membership" and now it has been identified that this group contains employees who wouldn't be using timecards as they don`t work overtime. Is there a way on mass to remove employees from this group ?