Its been a while since i used zbrush - i havent used zbrush 4 in fact - now it seems quite a few subtle changes have occurred while I was away. Lots of fab new toys and some reorganizations that have me a little confused. I have searched on line and in various PDFs for information about the rigging menu.
Its supposed to be in the tool menu - but i cant find it…

Am I looking in the wrong place? I expect I’m making an obvious mistake…
Any pointers would be appreciated