question

We have three Yealink W52P base stations and six W56H cordless handsets.  We also have six telephone lines.  We want each handset to have its own extension and be able to communicate seamlessly throughout a large warehouse space.  We expected that by linking each handset to each base station, that this would enable maximum mobility with the phones.  However, when anyone calls a number, all the phones ring.  They all show the same extension.  Is there are way to have six extensions on the six handsets and be able to configure a call flow/pattern?