The standard grips this chord is usually shown with.
F#69 is F#, A#, C#, D# and G#, a six-nine. The shape this page opens on is written 211122, lowest string first.

Also written F#6/9, F#6add9 or F# six nine. The same chord either way; which spelling you meet depends on who wrote the chart.
There are 8 common shapes for F#69 on the guitar, and 38 derived voicings in 4 families.
In which keys. Every note of F#69 belongs to C# major (the IV), Eb minor (the ♭III), F# major (the I), Ab minor (the ♭VII), Bb minor (the ♭VI) and B major (the V).
The common shapes, written lowest string first: 211122, xx4344, x44344, x66676, x96876, x98899, x-11-11-11-11-11, 14-13-13-13-14-14.
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. F#69 has 2111xx, xx4344, x9889x, 14-13-13-13-x-x.
Drop 2. A close-position chord with the second voice from the top lowered an octave. Sits on four adjacent strings. F#69 has 2111xx, xx4344, xx6876, x9889x, x-11-13-11-11-x, 14-13-13-13-x-x, x1414x, 4643xx.
Drop 3. The third voice from the top lowered an octave. The dropped voice becomes the bass, which is why a string is skipped. F#69 has x1x142, 4x434x, x6x374, x9x896, 6x687x, 11-x-8-11-9-x, x-11-x-11-11-11, 14-x-13-13-11-x.
Rootless. The root left to the bass player. Frees a finger for a tension. F#69 has x1112x, xx6646, xx8899, x-x-11-13-11-11, x-13-13-13-14-x, xx1324, x4x344, x4634x.
Tensions. A shell of F#69, root, third and seventh, leaves a string free, and the tones that belong over it are the #11 (B#).
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.