I've come to believe that maybe inside isolation is what he's looking for.
I do think that its game manual description is "half true". Meaning that it will look for the best inside scorer, but NOT as in straight IS rating of an individual player, but mainly as "offensive player's IS vs defensive player's ID" ratio, for all the match ups on the floor.
For instance, if my C has 10 IS and is stuck up against an opponent that is 13 ID, but at the same time my PG is 7 IS defended by a 1 ID counterpart, its very likely that PG will end up taking more of the (close range)shots.
Take a look at this game:
(60058402)Visiting team (A) costs less than home team's (B) starting Center(71k).
Team A decides to play inside isolation! Their C is their most expensive player, but only 12k salary.
Team A ends up winning(indifferent), with starting PG and backup PG being 1-2 in most attempted 2pt shots, followed by SG and C that had the same.
At the viewer we also see that 50% of ther made 2p shots were scored in the paint.