For toujou websites, you will benefit from multisites that we set up. Just contact our service team to get a second page tree. If your toujou installation is equipped with multisite, you will find the corresponding websites / domains in the page tree.
If you maintain your own TYPO3 website and want to know how to deposit the multisite yourself in the backend, we do recommend the Multi-Domain für TYPO3 V9/V10" target="_blank">video by Wolfgang Wagner (in German) on the topic. You will also find more information in English on the TYPO3 website.