https://coda.io/packs/google-calendar
Turn on the pack and through an action you can create events in a calendar of your choice. These events will have reminders as you have these set up by default in your Google Calendar (e.g. 30 minutes in advance before the event). Calendar pack is very limited in the free version of Coda though (only 20 actions, i.e. 20 created events, per month).
Or as @Johg_Ananda said, you can use Zapier or Integromat. You can actually use Zapier or Integromat to listen on new rows in Coda and create calendar events as well. This is more work to set up, but free tiers of Zapier and Integromat will give you higher limits of runs, not 20.
Or if your reminders aren’t time-sensitive, and it’s fine if the notification is delayed till the next hour + up to 20 minutes, then you can build a reminder system with Coda automations.