Having "bank details" within "Contacts" does not make logistical sense, this should have its own area.
"Contacts" is not a usual place for individuals to search for this, but also, allowing their own area will allow for developments to be made which could incorporate the current P46 questions allowing a seamless link to payroll.
In addition, we need to be able to open up contacts for managers to view, but not the bank details.
