Sharing Team Site

1. Select Share site.  

2. In the Share site pane, enter the names of people or groups to add them to the site, or enter "Everyone except external users" to share the site with everyone in your organization.

3. Change the permission level (Read, Edit, or Full control) as needed.

4. Enter an optional message to send to the person, or clear the Send email box if you don't want to send an email.

5. Select Share. 

Microsoft 365 group-connected team sites

1. Select Settings, and then select Site permissions.
    

2. Select Invite people.

3. To add members to the group so they can access all the group resources, select Add members to group, and then Add members. To give people access to only the site, select Share site only.
   
   

4. Enter the names of people to add to the group. If you're sharing the site only, you can also enter groups or enter "Everyone except external users" to share the site with everyone in your organization.

5. If you're sharing the site only, enter an optional message to send to the person you're inviting, or clear the Send email box if you don't want to send an email.

6. Select Save if you're adding members to the Microsoft 365 group or Add if you're sharing the site only.