Assign Security Groups to Leads via Workflows

Is it possible to assign a security group to a lead via workflows? I see mention of people achieving this in other posts but can’t see specifically how this can be configured through the front-end. It looks to me like Security Suite Management can be used to assign Leads to Users, but cannot see how leads can be assigned to Security Groups.

We’re using:
Version 7.11.3
Sugar Version 6.5.25 (Build 344)