Merge branch 'docs-update-minimal-access' into 'master'

Update Minimal Access Role Documentation

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/159278



Merged-by: Fiona Neill <fneill@gitlab.com>
Approved-by: Smriti Garg <sgarg@gitlab.com>
Approved-by: Fiona Neill <fneill@gitlab.com>
Reviewed-by: Fiona Neill <fneill@gitlab.com>
Co-authored-by: Jason Goodman <jgoodman@gitlab.com>

doc/user/permissions.md

@@ -518,10 +518,14 @@ Users with the Minimal Access role do not:
 Owners must explicitly add these users to the specific subgroups and
 projects.
 
-You can use the Minimal Access role to give the same member more than one role in a group:
-
-1. Add the member to the root group with a Minimal Access role.
-1. Invite the member as a direct member with a specific role in any subgroup or project in that group.
+You can use the Minimal Access role with [SAML SSO for GitLab.com groups](group/saml_sso/index.md)
+to control access to groups and projects in the group hierarchy. You can set the default role to 
+Minimal Access for members automatically added to the root group through SSO.
+
+1. On the left sidebar, select **Search or go to** and find your group.
+1. Select **Settings > SAML SSO**.
+1. From the **Default membership role** dropdown list, select **Minimal Access**.
+1. Select **Save changes**.
 
 ### Minimal access users receive 404 errors