Question regarding Quota in SNP

Hi

I have 2 locations A and B. Supply is at location A and I want to push a percentage of the supply to B.

How do I maintain quota to achieve this scenario. I am trying to use deployment.

Any other standard solution is also fine. I can think of workarounds or coding, but trying to see if standard can support this.

Ex:

Supply at location A = 100

Need to keep 80 at A and send 20 to B.

Thanks

Hari