I have created the Parent-child table form , but when I go to child form --> Setting ---> notifications ----> I didn't find the field from parent table (where i want to send the notification )
Even if you will create lookup fields in your Child Table it will not trigger Notification when Parent value change.
To trigger notification record itself needs to be updated (not lookup or formula). So I suggest you create Pipeline to Edit Child record to trigger change in field based on Parent table edition.
You will need to go to the relationship and add a lookup field for the recipient down to the child records..
