1. Open the project you want to import a template into
2. Go to "Project design" and select "Templates"
3. The list of your available templates is shown under the "Templates" heading. 
4. Find the template you want to import and click on the three dots to the right of the template’s card (visible only when hovering over the card)
5. Choose "Import"
6. Confirm you want to import all the template's variables into the project by clicking "Import template"
7. The template variables will appear in the project. They can be viewed in the "Variables" window.