Office 365 (SharePoint) - Sharing Sites and Document Libraries

You can use the Share command to invite other people in your organization to a site.

Please see this Microsoft article for more information on sharing SharePoint sites:

https://support.office.com/en-us/article/share-a-site-958771a8-d041-4eb8-b51c-afea2eae3658

The files you store on a SharePoint site are usually available to everyone with permissions to the site, but you may want to share specific files or folders with people who don't otherwise have access to the site. When you share files and folders, you can decide whether to let people edit or just view them.

Please see this Microsoft article for more information on sharing files or folders in SharePoint sites:

https://support.office.com/en-us/article/share-sharepoint-files-or-folders-in-office-365-1fe37332-0f9a-4719-970e-d2578da4941c

Another way to share is to get a link to a file or folder that you can copy and paste in a text message or on a website. People you share these links with can also forward your link to others.

Please see this Microsoft article for more information on getting a link to files or folders in SharePoint:

https://support.office.com/en-us/article/share-sharepoint-files-or-folders-in-office-365-1fe37332-0f9a-4719-970e-d2578da4941c

You can stop sharing an item, or change the permissions others have to it, if you're the owner of the item or have edit permissions.