Multi-user? Is it possible for two users to work on Sage at the same time?

SUGGESTED

This might be a stupid post but I can't find the definitive answer online...

My colleague and I both need access to Sage. If I need to access Sage, he will backup and and I will restore using his backup. I'll then make changes and he can't do any work until I've backed up again, for him to then restore.

We use Sage50 cloud accounts. 

Is there any way we can both use Sage at the same time?