To add attachments in the tenant portal you need to have admin rights. If you still can't see the attachments button, please reach out to support@falcony.io:
After navigating to attachments, add the file from your computer, name it and press "send".
Once the attachment is there, click the name of it and it opens in a separate URL. You can now copy the URL and paste it to for example to the tenant guide as a link or as a new button to the front page.