1.Open Office Portal ( portal.office.com ) on Safari/Chrome/Firefox
2.Enter CEIBS mail account
3.Enter password and Sign in
4.Click Apps
5.In the top right corner, click Install apps->Microsoft 365 apps
6.Download and open install package
7.Waiting for the app installation to complete
8.Click Close
9. Open any office app and sign-in with CEIBS account to activate it. Done.