If checkbox is ticked, make file upload in the Attachments section mandatory

If checkbox is ticked, make file upload in the Attachments section mandatory

Hi there,

I was wondering if it is possible to make a file upload in the Attachments section of an Account record mandatory after the user has ticked a specific checkbox in the very same Account record.
I would like the user to be drawn to that section after ticking the checkbox so that they are prompted to upload the document. Do I need a function with a workflow for that?

Thanks and BR

Valeria