Colour Dependent Lineweights

I've had Draftsight 2021 installed by IT which replaced the 2019 I was using previously. Unfortunately, we managed to lose all the profiles and custom settings in the process. I've managed to reset most things back to how they were, apart from lineweights.

I've always used 1 layer and different line colours for different line thicknesses i.e Yellow prints 0.25, Cyan 0.4, Magenta 0.7 and so on.

Currently, everything is being printed 0.25 regardless of line colour.

Could you please guide me to the right place where this can be set. Thanks