Main question: When constructing 3bet ranges how should we adjust our range when facing a raiser + caller (s) rather than just one raiser?

My own thinking is that we can 3bet (squeeze) more liberally as the initial raiser will be able/have to defend less with more opponents in the pot while the cold callers ranges are weaker than opening ranges and not often able to call. Is this correct or am I way off base?

Given this is squeezing a polar range more beneficial to a linear range as a lot of our value from squeezing is picking up the dead money pre flop? should we be keeping some of the weaker hands that might be used in a linear 3bet range for our calling range preflop?

At the minute I almost exclusively 3bet or fold from the SB (BB dependant) so the two biggest positions to think about these ranges for me are the BB and the BTN, simply because not having a calling range in the SB makes working out that range a lot simpler.

Appreciate any input/thoughts on the topic?