I've just installed 18.10 on a new machine and want to use the default GNOME desktop environment.
Before, I used GNOME Classic which has a task bar at the top of the screen with launchers. Right clicking on the task bar holding Alt brings up "Add to panel," then I have the option to create Custom Application Launcher. One of the options is to choose what command the new launcher should call.
I want to do this in my new GNOME (not Unity anymore?) environment, but don't know how.
alacarte
aka "Main Menu" GUI application, see this answer: askubuntu.com/a/79596/480481