Hi guys
(MODS, if this is a wrong thread, please feel free to move/delete it accordingly, sorry)

I need to use Nikon's Capture NX (at home) to rush for a work task.
I need to 'Invert' my photos. Apparently Photoshop (dunno which version, coz i never touch PS) has an Inversion Tool.

I cant find this Inversion Tool in Capture NX.

Is it hidden somewhere?
Will it work on JPEGs or only RAW?
Or if there is no such Tool, can I like use Level's & Curves or some other Tool?

Many thanks!