The indoor SYWAT format is the NFAA standard "300 Round," shot at 20 yards.  Archers shoot 12 ends of 5 arrows each for a total of 60 arrows. 
Targets are rotated between top and bottom after the 6th end. 
Targets are the archer's choice of the NFAA 40 cm (blue) single spot, or the NFAA 5 spot.  Scoring on the 40 cm target is 5-4-3-2-1.  Xs score 5, but are counted as a tiebreaker. 
The 5 spot target is scored 5-4.  Xs score as 5, but are counted as a tiebreaker.