Multiscale hybrid simulations of all-atom and coarse-grained systems

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Dear all,
I am currently working on DNA-Protein multiscale simulations and I am new to it. I want to combine all-atom AMBER and coarse-grained MARTINI forcefields. Earlier there were tutorials on combining OPLS and MARTINI through virtual sites. I have some doubts.

  1. Can I use the same protocol for combining AMBER and MARTINI?
  2. How to prepare the tabulated user-defined potentials and is it mandatory? Are the tables already available for AA-AA, CG-CG, and AA-CG? Or do we need to prepare them on our own?
  3. If we need to prepare them, how can we approach?

Thank you in advance,
Priya