Banjo Dsus2 chord (Open G)D suspended 2nd on the 5-string banjo: 0 2 3 2, and 6 more shapes

Frets, string 4 to string 1: 0 2 3 2 (open position)

1. String 4 (D): open, D
2. String 3 (G): 2nd fret, index finger (barre), A
3. String 2 (B): 3rd fret, middle finger, D
4. String 1 (D): 2nd fret, index finger (barre), E
5. String 5, the short g: open, G, not in the chord

Sounds: D A D E  ·  Dsus2 is D, E, A (1 · 2 · 5)

The 5th string: the short g adds the 4th over Dsus2, a colour rather than a clash.

Open G tuning: gDGBD, the short 5th string first, then strings 4 to 1.