Many DAWs come with their own collection of proprietary plugins. As an end user, I generally never use proprietary plugins because doing so locks one into a particular eco-system and also makes it difficult to collaborate with other musicians who have a different DAW.
Nevertheless, with most DAWs, it can be done and generally just requires a little bit of preparation. Conceptually, we are going to view the DAW as if it was a physical external multi-timbral hardware synth. We will send MIDI messages into it from Gig Performer and we will receive the audio generated by the DAW back into Gig Performer.
In this blog article I will demonstrate how to do this using Apple’s Logic Pro using virtual audio drivers.
Link: https://gigperformer.com/how-to-use-logic-pros-proprietary-plugins-from-gig-performer/