You can by default only have one time setting per service. If you would like the same service to have a longer time option then you would create a separate second service to book out that time.
Using the Multiple Service Duration’s add-on allows the single service to have multiple time variations shown when booking.
By pressing the Add Duration button, order you pricing and time in the order you wish to display them
This then presents multiple time options to the client when they select the service from the booking form.
Change your minimum price to reflect the new options.
Show Minutes in Hours
Since LatePoint 4.2.3 there is now an option to have minutes as hours in all booking views.
This is done with a tick box under settings>settings>steps>other step settings.