I was reading in the BIAB manual that we can enter up to 4 chords per bar. Is there a trick to having the bass play a different note on the second half of a beat...

For example, when trying to arrange an accompaniment for "Let It Be" or any number of songs with descending or ascending bass lines that are composed with this kind of beat structure. In this case the chords and beats look like this:

|C G |Am Am/G F |C G |F C/E C/D C |
1 2 3 4 1 2 & 3 4 1 2 3 4 1 2 & 3 4

There are lots of songs where the bass notes move in this kind of rhythm, and lots of unwritten songs waiting to be composed using BIAB... so I was wondering if and how we can make that a reality.

Looking forward to your input. Thanks.