Are there anyways to show first value in 1-side table by many-side table rows in "Matrix" visualize

[HelloTheSun]

Hi community

I have 2 tables :
1. table "A" : contain [Policy No]
2. table "B" : contain [Channel]

and both of table have a one-many relation : 
A (*) <- (1) B

but when I create "Matrix" visualization which contain [Policy No] in row and [Channel] in value (first value)
I found that [Channel] show first of all B table that is "Agency" in every row of [Policy No]

,not show first values by row.

Are there anyways to show the first value of [Channel] by [Policy No] rows in "Matrix" visualization?

Please Help me.

Thank a lot for answer.

[lbendlin]

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