Compare the operating models
In this fictional example, Haircut is forty minutes. Treatment adds twenty minutes of staff/chair use. A shampoo bottle adds one stock item without extending the appointment. Both are add-ons, but a single price-only checkbox hides an important difference.
| Business requirement | Service add-on | Product add-on |
|---|---|---|
| Treatment | Twenty extra minutes | Not a shelf quantity alone |
| Shampoo bottle | No extra time in this fixture | One SKU unit |
| Confirmation | Revised scope and end time | Goods quantity with appointment unchanged |
Work through the chosen model
Add-on definitions store duration/resource effects or product SKU/quantity. Attach the selected effects to the appointment/order. If treatment is independently scheduled later, it becomes a separate linked service appointment rather than stretching today’s haircut.
- Select the actual add-on
- Recheck affected time/resources or stock
- Confirm complete scope
Typed effects prevent missed time but require maintained definitions. Confirm that staff can see the complete scope before the appointment starts.
At 10:00 haircut+treatment ends 11:00. Haircut+bottle ends 10:40 and supplies one bottle. Selecting both ends 11:00 with one bottle, not 11:20.
When the other model fits
The bottle purchase includes a twenty-minute consultation. Still no time effect?
Show the worked answer
No. Record the newly supplied service effect instead of keeping the old product-only definition.