So the documention is not great whatsoever and I've wasted too much time trying to get done what I need to do.

It's quite easy to do in dnSpy, but as far as the patching tool. I can only achieve adding hooks, removing code and inserting fields.

What I'm looking to achieve is so simple but basically appears that the tool is restricted from doing it.

Edit: There's no buttons for the instuction box to add anything and clicking it does nothing. So I assumed it was restricted. As a last resort I tried right clicking it to see it had an unlock option hidden. Which brought up a menu.

So I got it to add the code I needed. Is there hidden documentation for the program somewhere? So others don't have to deal with the lack of information? There's plenty of documentation for every other aspect aside from the usage of the patching tool.