When visiting customers it may be useful to use the map and know where there is less traffic. However, sometimes the direction does not correspond to the geo location of the maps, so it is convenient to assign your site manually as well
From the iPad
Clients > Select one > Press on the address > Edit Location. Look for the exact site on the map and then press it so that from that moment take the coordinates given to the address and show on the map next time
Also from visits > Press Map you nay change the coordinates, too
From the web
On the web version you may assign coordinates too.