Where I have a song in 3/4 time with a change of chord on beat 3 how should I write that? I know how to change the time signature to 3/4 but do I leave the bar line with four spaces and put the second chord on space 3 or 4 or should I draw the bar line after three spaces?

Putting it on beat 3 with four spaces never seems to quite work properly and drawing bar lines after 3 spaces makes it all look weird.

What is the best way to deal with this please?

Thx