The guidance that would be most helpful is MDCG 2019-16, so start here. The guidance is not specifically on intended purpose, but it is on classification for IVDs and it talks about intended purpose, how to establish it, the impact to your classification.
GLOBAL BOTTOM CTA INSTRUCTIONS:
To display custom copy instead of global copy in this section, please go to Show Global Content for Bottom CTA? toggle in the "Contents" tab to the left, toggle it off, save, and then REFRESH the page editor, the custom text will then show up and ready to be edited.
Turning the global content back on will be the same process, go to the toggle and toggle it back on, save and refresh!