The Options button on the top right opens the options dialog with several settings.
Optimize routes - if disabled, the order of destinations not optimized
Home address - the default departure address that will be added to the map each time
Default departure time - departure time from which arrival times are calculated
Default service time - default service time, used for arrival times and time windows
Geocoding preference - the geocoder service used for finding addresses on the map
Suffix address - suffix added to addresses when send to geocoding service
Check address precise - gives a warning if a geocoding service does not return a precise result, e.g. no street or house number