You can't - Onedrive for business is meant to be individual. Unless they're logging in with the same account, you will have to share the files, which means the second user will have to go into the web portal and select "shared with me". A better option might be (depending on your O365 level) to create a Sharepoint group and have them both in it.Developers confirmed that it is possible to use two different Sync accounts on the same computer as long as each account is on a different user on your computer. Switching user accounts on your computer will allow you to access each Sync account. Thus you will need to use unique user logins on the same computer.
How do OneDrive and Microsoft Office work together?
If you also have the OneDrive desktop app installed on your PC (some editions of Office come with the OneDrive desktop app), OneDrive and Office work together to sync documents and let you work with other people on shared documents at the same time. To save Office documents to OneDrive:
How do I use OneDrive for business with multiple users?
(You might need to click the Show hidden icons arrow next to the notification area to see the OneDrive icon.) Select More > Settings. Click Office, and then select the Use Office to work on files with other people at the same time check box.
How to work on one drive at the same time?
Windows 10, Windows 7, or Windows Vista 1 Select the white or blue OneDrive cloud icon in the Windows taskbar notification area. ... 2 Select More > Settings. 3 Click Office, and then select the Use Office to work on files with other people at the same time check box. ...
Can I manage two OneDrive accounts on the same PC/Mac?
You do not have to log on and off to manage both account on the same PC or Mac. You can simply download the OneDrive application and install it on your computer. OneDrive and OneDrive for Business are two separate programs.