How to generate Zoho-oauthtoken for Google Sheets

How to generate Zoho-oauthtoken for Google Sheets

Hello,

We are trying to send a Zoho Desk ticket reply from a Google Apps Script. We are stuck at generating the Zoho-oauth token mentioned in the Zoho API documentation.


First, we started by going here: https://api-console.zoho.com/


From the available options, we chosed client based app:


But on the next step, we don't understand how to fill in the fields:



Again, we are trying to use Zoho Api from a Google script (https://script.google.com/......) that will be run when we press a button in a Google Sheets file (https://docs.google.com/spreadsheets.......).
How do we generate the auth token ? Your help is greatly appreciated !