The extension reserve allows you to reserve tickets for one or more persons using a period table and a form. Each reservation has it's own QR Code that can be scanned at the event.
Read the Extension Manual: https://docs.typo3.org/p/jweiland/reserve/master/en-us/
The recommended way to install the extension is using Composer.
Run the following command within your Composer based TYPO3 project:
composer require jweiland/reserve
Download and install reserve with the extension manager module.