# Authorization List, create and manage authorizations that grant access to another user's diabetes data. ## Get Groups for User - [GET /access/groups/{userId}](https://tidepool.redocly.app/reference/access.v1/authorization/getgroupsforuser.md): Retrieve all groups accessible to the user . ## Get Users in Group - [GET /access/{sharerId}](https://tidepool.redocly.app/reference/access.v1/authorization/getusersingroup.md): Retrieve all users that have access to group . ## Get User Permissions in Group - [GET /access/{sharerId}/{userId}](https://tidepool.redocly.app/reference/access.v1/authorization/getpermissionsforuser.md): Retrieve permissions of individual user in group . ## Update Permissions for User in Group - [POST /access/{sharerId}/{userId}](https://tidepool.redocly.app/reference/access.v1/authorization/grantpermissionsingroup.md): Update permissions of individual user in group . The permissions provided in the request body replace all existing permissions for that user. Therefore to delete a permission, submit the request body without that permission.