Bulk Upload EV Chargers on Waze

I work in a Singapore start-up company that has set up more than 70 EV charger locations. We’ve datasets for the information of the chargers, and location of the stations etc. I’m tasked to upload them to Waze though I’ve 0 idea how to do so. After doing some researches, I found no way to bulk upload them using a csv or json file etc. The only way is to manually upload one-by-one which is very ineffective. And if possible, I don’t wish to use any paid 3rd party service.
What are the best ways to achieve this? Thanks in advance.