From the beginning for newcomers: There are add-ons for Archicad that can be installed in addition to the normal functions. https://Graphisoft.com/us/downloads/goodies One collection for this is the "Goodies" with the wall addon. This allows library elements to be "hung" on walls, similar to how the automatic dimensioning "hangs" on the painted component. For this I have now developed my new "tile sign" GDL that I present here.
In order to be able to use the library element in the commercial Archicad, you have to open the GDL in Edu for scripting and then save it as an external file so that you can then add it in the commercial version with the library manager.