A player is in the balancing seat when his pass would end the auction. In contrast, a player is in the direct seat when his RHO took action.

In many low-level auctions, you must not allow the opponents to steal the bid. Also partner may have a good hand but didn’t have the shape to make a takeout double or overcall in the direct seat.

If balancing seat is short in opponent’s suit, he must really strain to protect partner’s probable good hand.

1NT is 11 - 15 HCP in balancing seat.

[ 1D  Pass  Pass  1NT ]…..this is not showing 15-17 HCP.

If holding a hand with 1NT opening values double then bid notrump your next turn.

[ 1D  Pass  Pass  Dbl ]  :  [ Pass  1H  Pass  1NT ]…..this is showing  15-17 HCP.

Overcall with 5-card suit and not a lot of points is OK in the balancing seat.

Jump overcall is not preemptive in balancing seat. Shows a 6-card suit and a hand of intermediate strength (10-14 HCP) that would have opened in 1^st or 2^nd seat

Double jump overcall is not preemptive in balancing seat. Shows a 6-card suit and strong hand but not quite one for the “big double” (15 to a bad 17 HCP)..

2NT Natural (Unusual NT off in balancing seat). Shows 18 – 21 HCP and the hand may hold a singleton if it is an ace.

Takeout double can be lighter than in direct seat. Doesn’t necessarily show a major suit, but you want partner to bid his best suit.

Double, then bid your suit is still “the big double” (a good 17+ HCP) as in direct seat..

Pass with intermediate hand if you have good trumps and are short in the majors (especially spades).