Capture One can handle numerous open Sessions at the same time. First, go to Capture One -> Preferences / Edit -> Preferences (macOS/Windows). Make sure that the Open in new window option is selected under the Catalog and Session section in the General tab.
- When one Session is open, choose File -> Open Session to open another one.
- Browse and open the next session file [Sessionname].cosessiondb.
- It is now possible to drag and drop image files from one Session to another.