unable to add active directory objects

Dear all,

i've following problem:

In a all-in-one installation DC+IM+DGE, all works finey, but in a splitted installation I'm unable do getting active directory object in a Manager console.

If i'm try to add service account i' unable to browse any active directory user account, but only itadmin using during installation.

Im think problem is in a topology configuration could you suggest a sep-by-step guide instead of deployment guide

Thank you