Enabling OneSignal Push Notifications

To send OneSignal Push Notifications, you need to have Firebase account. Follow "Enabling Phone Authentication " to setup Firebase Account.

After that follow the below video guide to get oneSignalAppId and SenderId .

https://www.youtube.com/watch?v=hdjQseB21kMwww.youtube.com

Sending OneSignal Notifications to specific Category

Sending Push Messages to specific a category

In the ADDITIONAL DATA, section add FIELD 1 KEY: category and VALUE: category_id

Sending Push Messages to specific a product

In the ADDITIONAL DATA, section add FIELD 1 KEY: product and VALUE: product_id

Or Follow below video guide

https://www.youtube.com/watch?v=fystCGy2vZkwww.youtube.com