Solving coupled PDE's in COMSOL 5.2

Hi!

Is there any way to solve coupled PDE's without using the Coefficient form PDE? I am not able to fit in my equations using that module.
Also, How can i custom add boundary conditions(I am not able to add my boundary conditions using the inbuilt formats)?
I have attached few equations for example.
It will be very helpful if someone can provide step by step procedure roughly.

Thanks in advance!