Like Martin said there’s no way to avoid the clicks. But you can get around needing to change back & forth between Tools. With the Arrow Tool if you Alt+Click it will behave like the Draw Tool and insert a Chord Event. Also Alt+Drag lets you copy the Selected Events to a new location - so you only need to enter the chorus Chords once for example. And of course regular Copy & Paste works as expected
In my main Template I have a Chord Track that is populated by X Chord Events on every Bar for a lot (???) of Bars. While this makes it easier to initially enter Chords it does need some cleanup on the back-end.
One thing I’ve thought about doing (but not actually done) is to use different Track Versions on Chord Tracks to store a variety of common chord progressions. Then you could Copy & Paste these as needed.