[James Ivan]

Hello Musicman691,

Thank you so much for your reply.

That was one issue I thought could be a problem; the two machines operating different OS.
The problem is, I appear unable to update the MBP any further as it is so old.
The thought of selling both machines and buying two newer systems had crossed my mind.
Alternatively, investing in a custom built PC with tones of horse power??

I had read on VEP website that two keys would be required but that is good if I only need one.

They are not fusion drives I believe.

So, PT runs from iMac and MBP hosts say for example EWQL?
That should he enough to run that for sure.
Keep Waves and NI etc on iMac also?

Thanks.