Step 1: To manage access or stop sharing the file or folder, select an item, and then select Manage access near the top of the page.
Step 2: To stop sharing with everyone, near the top of the Manage Access pane, select Stop sharing.
Step 3: To stop sharing with one person, select the dropdown list, and then select Stop sharing.
Step 4: To change the person’s permissions, select the dropdown list, and then select Can View or Can Edit.