Record audio from master bus to an audio track

I would like to create a template that has an audio track that could record whatever happens to be coming out of the master output. I want to use it for resampling synths etc. and I want it to be there the whole time so If something good is happening I can just hit record and have a clip of what i’m hearing.

I can’t figure out how to route this.

Any advice apreciated , thanks.

only possible in the pro version afaik