How to create an Outlook reminder using Excel data

I work in a public library and one of my duties is to keep track of when our database subscriptions are due to expire. I have the information entered into an Excel workbook. What I would like to be able to do is set a reminder that is based on the end date subscription (i.e. receive a reminder one month prior to end of subscription to ensure the invoice is paid on time).

I have done a lot of looking on the internet to find help for this issue and nothing I have found is understandable to me.

I am attaching the workbook that I use for these subscriptions.

Thank you in advance for your assistance.