The loans overview gives a simple view showing either
Active Loans - Equipment that is either being loaned out or back from/to the selected warehouse
Recent Transfers - Equipment that has been transferred between warehouses by the warehouse staff scanning in equipment belonging to another warehouse from an equipment list and opting to 'keep' the equipment.
It is a read only view and is provided as a quick way to see the current equipment situation as intersite loans and transfers makes it quite complicated to understand why stock levels are at their current levels.