Use approval group as a condition in requisition approval group

Summary

Use a approval group and only approve when preparer is member of approval group else reject it

Content

Hello,

 

the requirement is to approve requisition when it's created by a group of preparer (around 750 users) else reject it. How can we use a approval group with these users and then use them as a condition in approval group?

 

Any other way to achieve it?

Thanks,

Tanmay