Board Thread:Support Requests - Getting Started/@comment-37919779-20190325192024/@comment-9605025-20190325220153

If your signature is simple, you can just add it directly using Special:Preferences. You only need the separate page if you are trying to do something complex. Even then, it is still technically possible to do it without a separate page and, regardless, you will need to use the settings at Special:Preferences.