A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
For a modern SharePoint team site, those two areas are related but not the same:
- “14 Members” on the site home page refers to the Microsoft 365 group membership.
- That group has Owners and Members.
- When someone is added as a group owner or group member, that access also flows to the connected SharePoint site.
- Group owners become site owners.
- Group members become site members.
- “Site Permissions” shows the SharePoint site permission groups.
- Typical default groups are:
- Owners = Full Control
- Members = Edit or Contribute, depending on the site/context
- Visitors = Read
- These are SharePoint-specific permission groups for the site.
- Typical default groups are:
So the difference between an Owner in the membership list and an Owner in Site Permissions is:
- Group Membership Owner = owner of the Microsoft 365 group and its connected services.
- Site Permissions Owner = owner of the SharePoint site.
On a group-connected team site, adding someone to the Microsoft 365 group as an owner usually also makes that person a SharePoint site owner. But the reverse is not true: adding someone directly to the SharePoint Owners group does not make that person an owner of the Microsoft 365 group.
When to use each:
- Use Microsoft 365 group membership for normal management of a team site connected to Microsoft 365 services. This is the simplest model and is the recommended approach.
- Use Site Permissions when SharePoint access must be managed separately from the Microsoft 365 group, such as:
- giving someone read-only access through Visitors
- giving site-only access without access to other group services
This is why they can feel redundant: the Microsoft 365 group drives the main Owners/Members access, while SharePoint permission groups still exist for site-specific access control.
About Visitors:
- Microsoft 365 groups do not have a view-only role.
- If someone needs read-only access to the SharePoint site, that person must be added directly to the site’s Visitors group.
About syncing the “14 Members” with a permission group:
- The built-in sync already works one way from the Microsoft 365 group to SharePoint:
- Group Owners → SharePoint Owners
- Group Members → SharePoint Members
- There is no flow back from SharePoint groups to the Microsoft 365 group.
- So if the goal is to keep the homepage membership and site access aligned, manage Owners and Members in the Microsoft 365 group rather than manually maintaining the SharePoint Owners/Members groups.
- For Visitors, that remains a separate SharePoint permission group because the Microsoft 365 group has no visitor/read-only role.
In short:
- Manage Owners/Members in Group Membership for a connected team site.
- Use Site Permissions mainly for Visitors or special SharePoint-only access.
- Do not expect SharePoint permission groups to sync back to the “14 Members” list.