How to synchronise only a part of the bucket (not all)

Hi!
we have a global bucket, with all partners data (restaurant, cafe shop…).
we need to synchronise only the datas part of a connected partner and not all the bucket data.
what should we do?
create a documents ids for each partners (shop::id1, shop::id2…, customer::id1, customer::id2…)?
or there is a best solution?

Thanks a lot

Have a look at XDCR filtering