Hello @debax
Thank you for reaching out on the community and telling us about your issue. While we generally don't recommend storing your main file you generally would do this by using a cloud storage such as dropbox, google drive, or Icloud. You'd need to move the folder into a folder that is cloud synced. You can move files easily by going in the top left and selecting file > Move to. From here you should be able to select the location that will sync between both computers.Again it's not recommended as it could cause some issues within the files. If you do want to try it just make sure to save plenty of backups for security. If you have any other questions let us know!
Thanks,
Quicken Francisco