One question...

Theme: Changing of several different elements

How can I change a signal name?
If you want to completely rename an existing signal, simply type the [v] key for renaming in the schematic or PCB.

However, you can also assign a continuous track or a signal branch to another signal. To do this, click with M11 on a green signal segment in the schematic or on a track in the PCB. The corresponding change dialog opens and you can change the signal below. Everything that is connected to this segment will be taken along to the new signal. The old signal is thereby split or made smaller.