- Log in to outlook.office.com using your Bedrock/Shinola credentials.
- Select Options, located in the gear menu, in the far top right corner.
- Select Other at the bottom of the options list, then click on "Go to the earlier version".
- Next select Groups.
- You should now see a collection of groups you belong to, and those you own. Double click on the group you would like to manage.
You should now be able to add/delete members as well as leave distribution lists.