I have never used capture one, but these days 1TB does not seem like much space on a hard drive. I am sure there is a way to store all your photo files on one or more secondary drives.

For lightroom, I use two external drives with permanently assigned drive designation L and P. All my raw photos are saved on "P". All Lightroom files, including the catalog are on "L".

A quick search on Google turned up The Image Quality Professor's Blog | Capture One RAW Converter and Image Editing tips and tutorials, time-saving shortcuts, undocumented tricks and photographic inspiration which may help with your problems.

Phil