I have a flow created in Salesforce (using Cloud Flow Designer). This flow essentially duplicates an opportunity but changes a few fields - in other words, it creates a renewal opportunity. I currently have it run by pressing a custom button. However, I would like it to automatically run every time an opportunity's close date is equal to TODAY.
I have searched Google, but can't find a good answer. I am pretty new to Salesforce, so it could be something simple that I am missing. I am using the developer edition.