Guide

1. Inside the main dashboard of your SharePoint site, go to the top-right corner and click the 'Settings' icon.

2. Choose 'Site Permissions' from the list of options.

3. Following that, you can now start managing the permissions of your SharePoint site. For instance, you may edit the access type of site owners, site members, and site visitors. Likewise, you can also change the Site-Sharing controls and Guest Access Expiration.

4. After making all the necessary adjustments to the permission settings of your SharePoint site, click the 'Close' icon at the top-right corner to apply the changes.