Automatically add role to group via script

Hello,

I am working on a script to create a group, add users to the group, set the manager, and add a role to the group.

I have the group creation, user add, and manager set working fine however I cannot get the role portion to work. I am not sure how to manipulate the 'sys_user_group' table to add the role to the group (since the 'Roles' is a related list on the table).

Anyone have any experience with this or how to go about it?

Thanks in advance,
Evan