Hi @Jenny26 thank you for the screenshot.
I dove straight into this one on my side and found the following:
- We cannot add in properties via the editor of a quote.
- These can be added via the quote template within the design manager.
- We can source the template html via the steps here: Tara Lawlor - Settings - 7 September 2022 | Loom
- This html based template will need to be edited by your developer.
If you do not have a developer to contact right now - you can see a list of our HS savvy developers here! 
They are certified by us and have experience working with the tools. They will be your best resource to use to reach your end goal.
Kindest regards,
Diana