Emergency appointment for H1B visa

Is there any way to get appointment for an emergency issue. I need to travel to India due to a family medical emergency. But I need dropbox appointment to ensure travel back to USA.

Can someone suggest if they have heard of this or how to go about this.

thanks

Below is how you can first book a regular appointment and then request expidite based on qualification.

https://www.ustraveldocs.com/in/en/expedited-appointment