I’ve got the basics going thanks to @thetechnobear’s helpful video (link below). In which, Mark takes a sub-patch that is currently in a separate .pd file, and copies it into sub-patch in the Module.pd file in order to hook up the inlets and outlets. (Sorry if I’ve not got the terminology quite correct there, hopefully you know what I mean though).
My question is, do you always have to do that? I’m looking at a Pd patch with multiple .pd files - do they all have to go into Module.pd? Ideally not, as that’s quite a lot more editing down into the guts of the patch. Of course, I’ve tried keeping separate files and that’s not working.