Banjo Bm chord (Open D)B minor on the 5-string banjo: 0 0 2 0, and 6 more shapes

Frets, string 4 to string 1: 0 0 2 0 (open position)

1. String 4 (D): open, D
2. String 3 (F♯): open, F♯
3. String 2 (A): 2nd fret, index finger, B
4. String 1 (D): open, D
5. String 5, the short f♯: open, F♯, in the chord

Sounds: D F♯ B D  ·  Bm is B, D, F♯ (1 · ♭3 · 5)

Found in: G major (iii), A major (ii), D major (vi), A mixolydian (ii), D mixolydian (vi), A dorian (ii)

The 5th string: the short f♯ is the 5th of Bm, so let it ring.

Open D tuning: f♯DF♯AD, the short 5th string first, then strings 4 to 1.