If you are managing a group with hundreds or thousands of members, see this FAQ for information on bulk changes to Google Group membership.
Only Google group managers or IT administrators can add members to a Google group. These instructions are for Group Managers:
Log into drive.google.com
In the top right corner, click on the grid icon
Click on Groups icon
Click on the name of the group you want to manage
On the left side, click on Members
You will see a list of current membership - click the Add members button
The following Add members interface will open
You can choose to:
Add Group members, Group managers, or Group owners (not recommended)
As you begin to type a members name, they should display user information based on the University directory. If you wish to add more than one member at a time, they will not display any information and you must separate each address with a comma
Include a Welcome message - required for External members (see this FAQ)
Change the Subscription delivery - it is recommended to leave at "Each email" and members can alter their own subscription delivery
Directly add members or, if toggling off, Invite members - invitation message required
When ready, click Add members
For more information about Google Groups click on the settings wheel and choose Help to be directed to Google Groups Help