This how i do it in windows.
not sure if same for mac.

right click chord sheet .
click chord settings
click the first beat and enter the chord and choose either hold or shot.
leave second beat blank (optional)
click 3rd beat and enter chord and choose either shot or hold.
ignore 4th beat

i found the best option for me was a hold on first beat and a shot on the 3rd.

disclaimer
im still learning myself and this is how i do it in windows.
check out the mac help file for chord settings and shots,holds and rests.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
3 4 time1.jpg (390.42 KB, 14 downloads)
3 4 time 2.jpg (462.31 KB, 14 downloads)

rebuilt styles,songs and real tracks.
win 10...amd a10 radeon r6 4c+6g 1.8ghz
64 bit hp envy
biab 2023 with 1004 build. styles 1 to 429 plus extras 1,2,3,4 and 6.
running as admin,cleaned up returned to factory settings.