How to create every month collector on 1st of month

I am a i nsurace agent, i have to collect the premium with my client every month. Every time need to check 1 by 1 is tired.
i also find many tutorial but still not understanding the step. if any can help just to help. can be the due date client put in a notice boxes?

Here is my file:

Attached Files

Renewal Listing.xlsx (12.6 KB)