For Console 1 users without a fader panel it is not possible to change drive models independent from the channel model. But you can load a preset where this is done and use it. I made a pack of presets for different models for you to download.
Please buy me a coffee 
https://www.paypal.com/donate?hosted_button_id=245TXRH3F9RMA
http://www.just-sounds.nl/softube/SSL4k.zip
http://www.just-sounds.nl/softube/BritishClassA.zip
http://www.just-sounds.nl/softube/Weiss+drive.zip