You may work in The Cloud which makes your files accessible anytime, anywhere, on any device. You may also work Offline on a local machine. Offline is only accessible on that one machine but great alternative when you do not have Internet access.
Working In The Cloud
Access MBS Office 365 and log in with your MBS network and password
Click Collaborate Area - One Drive Tile
NOTE: You can change the setting so it will always open in OneDrive if you prefer
Click Settings ........
Open a document you previous created in OneDrive or upload to OneDrive
Select EDIT in ONE DRIVE to have it work and save in the Cloud.