I created my own Extensions (v2022) and put it into C:\Users\<user>\AppData\Roaming\PHPMaker2022\extensions
folder.
Unfortunately, it does not show up from Tools -> Extensions.
I read from the documentation, Publishing Extensions as follows:
If your extensions are for your own use only, you can simply put your extensions under the extensions folder, e.g. C:\Users\<user>\AppData\Roaming\PHPMaker<version>\extensions.
Did I miss something?