You can open the Organiser and then open another job on the left hand side.
You can then select the master layouts (or just the layouts) and then drag them into your current job on the right hand side of the organiser.
Note however, that any drawings on those masters or layouts will still be linking to their original job file.
You will need to delete the drawings or re-link them to a view in your current job.
Many other settings (i.e. Model View Options, Graphic Overrides, Favourites, etc.) you will find Import and Export buttons.
For attributes you also have the Attribute Manager.
Pretty much the only thing you can't copy from one file to another is the views in the view map.
These have to be set up in each file.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10