Attaching Document(s) to a Template (PDF, JPG, PNG)

I would like to have the ability to attach documents in the template such as adding an attachment, (PDF, JPG, PNG) inside of the template area, from any perspective signer.

This is a huge thing that if as an example an ID needs to be attached to the document, they can simply click on the attachment & have it be uploaded to it. (PDF, JPG, PNG)
I have added a screenshot of (another platform I use) that has this built in.