Our example: three advisers, two rooms, one projector
Imagine a small training business. Any of three advisers can run a consultation. In-person consultations need one of two rooms. Product demonstrations also need the only projector. Online consultations need neither.
If two customers occupy the rooms, the third adviser must remain available online but not in person. If the projector is in use, another adviser and room being free must not open a second demonstration slot. This is our example, not a claim about any named business.
Write down the requirements, not just the headcount
| Appointment | Person | Room | Projector |
|---|---|---|---|
| Online consultation | One suitable adviser | None | None |
| In-person consultation | One suitable adviser | One room | None |
| Demonstration | One suitable adviser | One room | One projector |
A capacity limit is not always a room reservation
Consider an hour from 10:00 to 11:00. Room A is occupied for its first half; Room B is occupied for its second half. There is always one free room, but no single room is free for the whole hour. A system checking only the total count could satisfy a two-booking limit without satisfying your requirement to keep a customer in the same room.
That example is why our checklist distinguishes shared quantity from a named resource for the whole interval. Neither is automatically wrong; the necessary behaviour depends on your service.
Which documented approach should you investigate?
SimplyBook.me connects resources to services and allocates them automatically. SuperSaaS service schedules can combine requirements and interchangeable resources. Amelia provides appointment resource controls in Pro and Elite. None has been hands-on verified by us for the complete example. [source] [source] [source]
Start with the comparison, then run the same small trial in your two most relevant candidates. Treat a successful simple booking as the beginning of the test, not the end.
Count the actual cost of a working configuration
For each candidate, record the plan, billing period, renewal price, staff or resource accounts, booking allowance and add-ons your workflow uses. Do not compare a yearly promotional headline with someone else’s month-to-month total.
For example, SimplyBook.me’s Basic allowance is 100 bookings per month, while SuperSaaS’s first paid tier permits 100 upcoming appointments at a time. Those are different limits, even though both use the number 100. [source] [source]
Before you commit
Test a clash, an online exception, a full-interval reservation, a resource buffer and a cancellation. Then test the booking as two customers competing for the last slot. Record unresolved results rather than assuming that “no error appeared” means the resource was protected.
Sources and evidence
Product documentation and listed prices checked on 16 September 2026, except where a price is explicitly left unverified. These are not hands-on reviews. Scenarios and suggested trial checks are our own.