How do I set a new location?
Click on a new location in any map and then the information for this position comes up (that also works with the cogwheel in the upper right corner with “My Locations“. The list there should include the locations where you clicked the bookmark icon at the top of an address. This list is prefilled with some random places).
How can set a location as a favorite?
Click on the bookmark icon on top of the page (in the address section):