how do I upload a document to be a CTA within an email?

[Cathy_Reardon]

I am working on a nurturing campaign and am unable to replace the document attached as a CTA?  Thoughts! Ideas! Suggestions!!

 

[Josh_Hill13]

Do you want to replace the existing file?

Or do you want to upload a new file, then update the URL on the email?

[Cathy_Reardon]

Thanks for your response Josh.  It is a new campaign.