In the above, there are three tabs for pyRevit. The default and two custom ones that I created. On the tab in the image, there are four panels (not organized but they are there). Some of those buttons also have drop-downs with multiple tools under a single button.
Do you mean to have buttons in standard revit or other plugin tabs/panels?
Have you tried to call you .tab and .panel folders with the same name as those?
I once did the opposite: use the same tab as my pyrevit extension for a custom revit plugin I developed. At boot they appeared in the same tab, but as soon as I reload pyrevit, my custom plugin buttons are removed. It shouldn’t be a problem for the end user that doesn’t add pyrevit scripts, but it could be annoying…
Here is a link I found on github that describes what I was trying to do:
Basically, moving one of my custom extension panels/buttons from its own tab to within a native Revit tab (which apparently some think is bad practice but I’ve not had any issues).