I want to add some delegate methods, so I use the generate delegate methods command. I choose an instance variable to delegate to, then try to choose the two methods I'm interested in.
Niether cmd-click nor ctrl-click allows me to make individual selections; I can select ranges with shift click, but the two methods are not near each other (natural or alphabetical order).
A more sophisticated UI might places check-marks next to method to delegate to, to make it easy to do multiple selection (and perhaps a double-click option as a quick way through the UI for handling single methods).
And PLEASE do not add check-marks. This will make it much a lot harder to use keyboard and will result in the productivity hindrance Eclipse is.