Thanks.
I bought a separate hand grinder which I intend to use for anything other than espresso, as my understanding is although this can do all sorts of grinds, changing from a finer grind to a coarser grind isn’t as simple as in the Niche. You do have to faff a little bit, which isn’t ideal.
The dial in the right pops off (magnetically attached), then there is an allen screw which needs to be unscrewed. Then the underlying dial needs to be popped out, rotated 180 degrees (which way depends if you want to go finer or coarser), then reassembled.