I would like to number fixtures in theirs patch names but don't want to start at 1

For instance I have 16 Titan tubes and I want to name them all Titan plus a number corresponding to their ID Numbers 22 through 39 rather than starting at one. I tried naming all of them Titan 22 but then I got Titan 22 1, Titan 22 2,…ect. I can do this in MA but haven’t figured out if it is possible in Onyx yet.

You are right. It is not possible. What you could however do is add 39 unpatched devices and delete the first 21, then patch the remaining ones. Yes, its two steps but its less work than renaming them one at a time