With regions being defined now it's time to set up services. Services are actually the list of options user has to order just like picture below:
Services You would need to first define service categories using
New Category button. After doing so
New Service button would appear in same screen so you could add services too. Options to define a service are many making app usable for businesses other than taxi too. Depending on your type of business you can set appropriate options and fee structure in this screen to be presented.
Don't forget to assign service to regions by adding the region from left list (All) to right list (Enabled) or else ordering won't be possible.