After you have configured your hotspot and you RaPi is up and running you may want to change the hostname of the Pi. The hostname is what you see when you log in by command line, at the top of your VNC window, in network connections and many other places. The default name is normally "raspberry" or "raspberrypi".
A suitable name such as YOUR_CALL_SIGN followed by "hsp" is more meaningful that "raspberry" (especially if you have multiple fruit pi's with the same name). Mine are called "vk3erwhsp" (home hotspot) and "vk3erwmobile" (mobile hotspot).
To change the hostname follow these instructions:
Open Terminal and execute the following command.
Click OK on the next screen (after reading it, so you understand what's acceptable in a hostname).
Reboot the Pi and you enjoy your new hostname.