multicam problems with syncing audio tracks

I'm having problems with Multicam synhronnisation.

I have two vidos with two audio tracks each.

I synced video 1 to video 2 by a counter in the video.

and noticed that the second soundtrack of both video where not in sync with the first audiotrack.

So I opened the multicam sequence in the the timeline.

an only saw two videos and two audio tracks.

I seems to have combined the two audio tracks of each video into one.

How can I edit individual audiotracks for each video?

I want to sync audio track 2 of video 2 with audio track 1 of video 1 and

audio track 2 of video 1 with audio track 1 of video 2.