You can create multiple journals easily.
To create your first journal, click here.
If you already have created a trading journal and would like to create a new one, this article will help you.
To create a new trading journal/database, click on the current active "Account name" at the top right corner.
The popup now shows you all trading journals.
Click on the "Add database" button
When clicking the "Add database" button, the dialogue to create a new journal opens up. Instructions for the dialogue: click here