Howdy.

With the highlighted cursor over the 1 & 2 beats of the bar, enter the chord followed by a comma and the next chord. Pressing enter then moves the cursor to the 3 & 4 beats of that bar.

For example, 'G,C' 'Enter' followed by 'D,G' 'Enter' should give you a bar with four chords, one on each beat, 'G C D G'

My songs are here:
https://soundcloud.com/scott-h-olson