Hello @animeshg5431-gma,
When adding your company information, the Company Phone field only accepts one phone number. If you wish to do so, you can consider entering the second phone number of your company in the Website field.
For additional insights, here's a helpful article you can read for ideas about the other company details you can enter: Change Company Name, Address, Email Address or PAN, CIN, and Privacy Settings in QuickBooks Online.
Keep me posted in the comments if you have any other questions. I'll be here to lend a hand.
