Your Boarder Thumbnail View shows all boarders with their image and a colour coded location marker to identify their currnt location.
Filter Options allows you to filter your current screen view to a select specific population based on any combination of selection option that you have established in REACH.
Hovering your mouse over a particular Boarder's image will provide a description of that Boarder's current location and their expected return to the boarding house.
Selecting a boarder will open the SISO sidebar which allows you to assign the new location to the selected boarder.
If you have a quantity of boarders moving to a single location then you can use the Bulk SISO function.
Simply select the boarders that you want to assign to the new location and then from the Bulk SISO drop down option select the location that you want to move them to.