Setting booking constraints
Using constraints, you can guide the behavior of both your schedule and users. This allows you to specify in detail how many bookings can be created and at what time.
Via Configure > Resources (or Configure > Services in case of a Service schedule) various constraints are available to control the behavior of your schedule. These let you define limits per user and/or slot. Various time constraints help you to control when users can book any resource or service.
Limits per user
Each of the schedule types allows you to control how many appointments users can make per day, week or month, in total or in the future. Such constraints can be useful, for example, when you work with a membership structure that allows a limited number of bookings per member per week.
Limits per slot
In addition to these limits per user, Capacity schedules also allow you to control the number of bookings that can be made per slot (default capacity per slot). You can also control whether the same user can make multiple bookings for a single slot. This option will add a “Quantity” field to the booking dialog, allowing users, for example, to specify the number of seats they want to book.
By default, capacity information is visible to all users. If you choose to hide it, information on whether a slot is available or not is shown instead.
You may also allow a single user to make multiple bookings for the same slot. This would allow a user, for example, to make bookings for his friends using his own user account.
If you constrain the capacity of slots, you have the option to allow overbooking. Once a slot reaches capacity, additional bookings will be placed on the waiting list. Overbooking can be restricted to superusers and the administrator or allowed for all users of your schedule. In case of the latter, you can choose to put users on the waiting list automatically or leave it up to users themselves whether they want to be put on the waiting list.
You can choose whether users from the waiting list will get placed automatically once another booking gets cancelled or whether you will do this manually.
A user who gets placed on the waiting list will be notified according to the general notification settings. Provided email notifications are enabled, users will also receive an email confirmation upon being placed.
Note that upon enabling the waiting list feature, an additional setting will appear under Require payment or approval? on the Configure > Process page; this setting allows waitlisted users to pay upon placement rather than upon booking.
Depending on the type of schedule, you have several constraints available to control the length and/or start time of bookings.
Length of reservations
On a Capacity schedule, the length of a slot determines the length of reservations. The default slot length can be set via Configure > Resources. This length is used for any new slots you create on your calendar. You can, however, easily adjust an individual slot’s length from the default upon creation, or after it has been created. Changing a slot’s length or description, or moving it to another date, does not in any way affect any bookings that it may contain.
In case of a Resource schedule, you can choose from three ways to determine reservation length. You can choose to let users determine start and finish times, work with fixed lengths or let it depend on the resource or service selected from a drop-down menu, the so-called ‘length selector’.
Apart from a default length, the first option also allows you to enforce a minimum and maximum length. Furthermore, the Buffer time field can be used to schedule some time between subsequent bookings, for example because you need some time to clean up between two appointments.
When using the fixed length option, the default length field is used to specify the length of every booking made. You may also want to specify some time between two subsequent bookings, using the Buffer time field.
Upon selecting the third option, a new text area will appear where each of the options for the length selector must be entered as a separate line. Such a line may consist of a short description of the resource/service, followed by a duration in H:MM or D:HH:MM format. Optionally, you can also add a price (see also Presenting prices).
Start time constraints
Apart from the length of reservations, you can also configure your schedule in such a way that it allows users to create bookings at specific start times only. You can either specify start times explicitly, i.e. 9:00 AM, 9:30 AM, 10:00 AM, etc., or provide a so-called ‘pattern’. The pattern
*:00, *:20, *:40, for example, would allow new bookings to start every hour, on the hour, as well as 20 and 40 minutes past.
The optionwill make a single open spot available at a time. This forces people to make adjacent bookings which prevents open holes in the schedule, a concept sometimes referred to as “cluster booking”. When an appointment is cancelled that space will first open up to fill the gap. As administrator you will still be able to click the start time and manually adjust it to book anywhere.
When you don’t use start time constraints, appointments can potentially start anywhere. In that case you may consider setting an appropriate rounding time. That way you can avoid that users book irregular times like 12:07 to 12:23, which would leave your schedule full of holes. When you use the rounding times feature in combination with start time constraints, only the finish time will be rounded.
When you select Round times to the nearest day, the user interface will omit displaying hours and minutes. This is useful for multi-day events, like renting out a vacation home, where it wouldn’t be appropriate to specify a time in minutes. You can further restrict the times during which clients can book by specifying your opening hours and adding special days such as national holidays and vacations. This can be done via Supervise > Opening Hours / Special Days.
In addition to the schedule constraints discussed above, there is also a small set of constraints that let you control the timing of the booking process itself.
Adding and changing reservations
Via Configure> Process you can specify after which point in time a reservation cannot be changed or deleted anymore, as well as when reservations can be added.
Note that if you allow users to book only one day in advance, it won’t be possible for them to make a reservation for 2:00 PM the next day if it’s not yet 2:00 PM on the day before. If, instead, you want to make the entire next day available for booking, then select.