At this time you are able to use the Attach Files feature to attach a file to your template/document on the side. To do this, please enable the Attach Files feature in Add-on store (click Add-on Store in the main menu)
To attach a file, open your template/document > click More on the right > Attached Files > upload your file. For more information please check our FAQ article.
you can attach up to 10 files.
In case you want to upload an attachment in the body of your template, please use the Attachment Block.
Note:that in this case a template should be created via PandaDoc Editor
If you created a template via upload, please scroll down and click +Attach another document button and upload another file.