The standard grips this chord is usually shown with.
Gm69 is G, Bb, D, E and A, a minor six-nine. The shape this page opens on is written 310230, lowest string first.

Also written Gm6/9, Gmin6/9 or G-6/9. The same chord either way; which spelling you meet depends on who wrote the chart.
There are 9 common shapes for Gm69 on the guitar, and 43 derived voicings in 5 families.
In which keys. Every note of Gm69 belongs to D minor (the iv) and F major (the ii).
The common shapes, written lowest string first: 310230, 3122xx, x12233, 3x2335, 3x5355, xx5355, x55355, 655755, x-10-8-9-10-x.
Shell. Root, third and seventh: the guide tones fix the quality, so the fifth is dropped. That is what leaves a string free, so pick a tension to put on top. Gm69 has 3122xx, xx5355, x-10-8-9-10-x, 15-13-14-14-x-x.
Drop 2. A close-position chord with the second voice from the top lowered an octave. Sits on four adjacent strings. Gm69 has 3122xx, xx5355, x-10-8-9-10-x, 15-13-14-14-x-x, x1525x, 5753xx, 6-10-7-9-x-x, xx7986.
Drop 3. The third voice from the top lowered an octave. The dropped voice becomes the bass, which is why a string is skipped. Gm69 has x1x253, 5x535x, x-10-x-9-10-6, 6x798x, 12-x-8-12-10-x, x-12-x-12-11-12, 15-x-14-14-11-x, x7x385.
Rootless. The root left to the bass player. Frees a finger for a tension. Gm69 has x1223x, xx7756, x-x-8-9-10-10, x-13-14-14-15-x, x1x230, xx2335, x5x355, x5735x.
Open string. An open string left ringing against a fretted grip. Because it costs no finger, it sounds a note the closed shape has none left for -- a tension on top, or a pedal root underneath. Either a familiar grip with open strings added, or a shape so sparse the open strings carry the chord. These belong to their key rather than to a shape, so D, A, G and E have many and Eb a handful. Gm69 has x00056, 000036, 0003xx, x0035x.
Tensions. A shell of Gm69, root, third and seventh, leaves a string free, and the tones that belong over it are the 11 (C).
The common shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.
Shows each chord the way this style would voice it, and marks which of its alternatives belong to the idiom.