Click to call is a facility where you can request for a call from our customer support team if you wish to speak to us regarding anything.
For availing the same, go to the profile section from the top right corner of your home screen and click on Help and support. Now click on "Request a call back" as seen below.
You can edit the phone number if you wish to receive a call on some other number and then click on Request a call.
If you have placed the request between 9:00 am - 6:00 pm, you will get a call back on the same day, otherwise you can expect the call on the next working day.
Here's a video explaining how you can reach the Kotak Neo customer support.