MEAM Parameters in Hybrid pair_style

Dear Users and Developers
In my simulation system there is 3 elements (A, B ,C). I want to set
buckingham potential to all A , B (A-A,A-B,B-B) interaction and MEAM
potential to C-A, C-B and C-C interactions. From manual I found to use
hybrid/overlay and then set MEAM parameters for C-A, C-B and C-C
1-I am worry and exactly don't know which parameters I should set zero
to reach this goal and dont create wrong result.
2- Is there any other method to avoid this method and set the parameters zero.
Thanks in advance

pair_style hybrid/overlay meam buck 2.5
pair_coeff * * library.meam A B C ABC.meam A B C
pair_coeff 1 1 100.0 1.5 200.0 4.0
pair_coeff 2 2 160.0 1.5 150.0 3.0
pair_coeff 2 2 160.0 1.5 190.0 9.0

You cannot do this kind of hybrid splitting with a manybody potential. It can only work for pairwise additive potentials. Axel