I don't want to give option of Adult seats required.

Please help me to eliminate this. 

How can i add payment option of "Payumoney" and "Payment using Credit/Debit card or net banking"

You can simply set Default adult seats = 1 at Backend -> General Settings, this will set default value to 1 of Adult seats,

We have already implemented several payment plugins which you will find in Available Payment method list while creating a new payment method. We have implemented Authorize.net SIM, Stripe etc. which will provide Credit Card payment for your customer. "Payumoney" will be a custom development, if you are interested, please send us API Guide, we will investigate and inform you a time and price quote.

Hope this helps
Ronniee

I don't want to show "No. of Adult seats" in front end form as this will not be used as shared cab.

Kindly help me to do this

Hi Nirmal,
Adult seats is vital selection for the whole system. The system will track the Seats even in Shared vehicles and will not show the car when it is full. Also this field allows your customers to select more than 1 seat per booking.

You can take a look at the documentation about Shared rides if you haven't done so already: https://booking.drivenot.com/en/documentation/33-shared-rides

Hope this helps.
Kind regards.