In the upper right corner next to the selected location, you see the button “night-registry”. If you click this you will see all residents at the location you selected. You can also see a night registry of all locations for which you are responsible. To do this, click on 'all locations'. You will get a total overview.
You can download the night register by clicking on the 'download-icon' (in the pop-up to the left of the name of the location).