Every fingering that fits a hand
0010
open · no 3, 5
0553
easy · no 3, 5
What is true of it
G11 is G, B, D, F, A and C — 1, 3, 5, b7, 9 and 11 counted from G.
On an instrument that cannot reach all 6, the 3, 5 and 1 go first, in that order.
The easiest of the 2 fingerings below is 0010: one finger, held at the 1st fret.
1 of them use open strings, which is what makes a shape quiet to change to.
It leaves out the 3 and 5. 4 strings cannot carry 6 notes, and the 3 is the one this chord can lose without changing what it is.
Where its notes are on the neck
The brass dots are G, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
G11/B
4010
G11/D
7988
G11/F
x553
An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.