Assuming you want each label to have the same address, after you input the address in the address field, select it all > Right click > Font > Change as reqd (you can type a smaller size font size manually should you need to as that label size is small).
Clicking the New Document tab then opens your label sheet.
Select each Column > Use the Left Indent showing in the last column you selected and position all addresses as reqd.

View the labels via Print Preview > Print (with label sheet in the tray) or return back to label page for additional editing.