If you Install Enterprise or Premier as the Contractor Edition, you already see these fields provided in Edit Vendor and they are Functional and reportable. You would run a report to include the vendor List info for General Liability Expires and WC Expires, for example.

The Reminders function is part of the To Do List, as Tasks. Not as Vendor Bills. Company Menu > To Do lists. Set up the Task Reminder. Or, in Vendor Center, for that name, Add Note, then use the To Do button right there, to go to Tasks.

On the Reminders List Preferences, you get to include To Do items, or not, in the Company Preferences tab. On the My Preferences tab, you set the program to always open the Reminders List upon opening this file.

All of these tools work together.