Every fingering that fits a hand
5036
easy
x036
easy
5333
moderate
533x
easy
5336
hard
What is true of it
Cm is C, E♭ and G — 1, b3 and 5 counted from C.
On an instrument that cannot reach all 3, the 5 goes first, in that order.
The easiest of the 5 fingerings below is 5036: 3 fingers, held at the 3rd fret.
None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.
Where its notes are on the neck
The brass dots are C, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
Cm/E♭
x333
Cm/G
0333
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.