running a simulation of two PDK's simultaniosly

Hello Andrew, I want to run a simulation with two types of PDK's .(one of which i dont have yet,so its a bit theoretical question)

What do i need to do in order to aditionally incorporate another type of transistors for my project?

I  found this manual which did the procces,but this manual only shows using a circuit with one type of PDK.

if i am doing addional PDK import to my library path editor ,will the new type of transisor play well with the other type of the LOCAL PDK?

What considirations i need to pay attention for in doing such a thing?

I am very sorry if this question is a bit  theorectical,i just  want make this thing work and i feel that its not easy as it sounds i wanted an advice regarding this delicate matter.

because  i dont have yet the location of the other PDK so i cant show you what happens when i connect them toggether into one library path editor,so please dont critisize me for not shown any work .

if its not that easy as in the youtube manual of importing one PDKshown bellow  and that are other stuff to take care of,could you please share with some specific manual it would be great.
I know for a fact that its not that easy as importing one PDK of single transistor type circuit.

Thanks. 

www.youtube.com/watch