Self-normalized prompt \jpsi yields with $\pt>1$~\GeVc, taken from PYTHIA 8 simulations with different settings~, as a function of the self-normalized charged-particle multiplicity in $|\eta|0.9$ in the toward (left), transverse (middle), and away (right) azimuthal regions with respect to the \jpsi momentum direction. The yields are shown separately for the INEL$>$0 (full) and V0M~0-0.1\% (hashed) event classes. Lower panels show the ratios to the expectation from a linear increase.