1. Click on the 'Review' tab in Microsoft Excel. Select 'Share Workbook' in the 'Changes' section.
2. Click the 'Editing' tab. Review the listing of user names under 'Who Has This Workbook Open Now.'
3. Click to highlight a user's name. Click on the 'Remove User' button.
4. Click the 'View' tab. Select 'Custom Views' in the 'Workbook Views' group.
5. Click to highlight a user's name in the 'View' list. Click the 'Delete' button.