XnView Software

I am trying to understand, if there is a possibility to convert rgb to cmyk in Xnconvert.

There is a possibility to change the ICC profiles but the necessary (input and output) profiles are missing in my version and I can not seem to find the apropriate rgb and cmyk profiles in the web.
What went ...

Hello there
I am teaching Photoshop but I use XnView for a lot of my work and I highly recommend it to my students.
It is the best free image tool out there besides GIMP so thanks so much for creating it!

My students and I do however sorely miss one very important feature that no software besides ...