Notation	Definition
Parameters
$T_k$	Number of members in the group $k$
SR${}_r$	The related shedding rate for interaction $r$
Decision Variables
$x_{ijk}$	Binary variable, equals one if a passenger from group $k$ is seated in a seat in row $i$ and column $j$; equals zero otherwise
$d_{ijk}$	The summation of shedding rates that the passengers of other groups can cause for a passenger from group $k$ who is seated in a seat in row $i$ and column $j$