WP Travel Pro plugin provides an option for displaying an Enquiry button or an Out of Stock message on a trip page when the maximum number of passengers (pax) has been booked. This feature is available through the Inventory Options on the trip settings page.
Steps to Enable the Out of Stock or Enquiry Button
Step 1: Navigate to Inventory Options:
- Go to: Admin Panel > Trips > Select Trip > Inventory Options.
Step 2: Enable Trip Inventory:
- Ensure that the Inventory option is enabled for each individual trip. This allows the system to track seat availability.

Step 3: Choose Out of Stock or Enquiry Button Display:
- Once the inventory reaches its maximum pax limit, an Out of Stock message or Enquiry button will automatically appear on the trip page, based on your selected settings.

For more detailed assistance regarding the “Out of Stock” option, please refer to our official documentation
Conclusion
Check WP Travel documentation to learn more about configurations, modules, payments, and shortcodes.
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