Want to extend Domain for another year, cannot find DNS/Domain Manager

Want to extend Domain for another year, cannot find DNS/Domain Manager

I have an domain and  mail account qualitytyres.in which is going to expire in a month time, I cannot find DNS Manager to  extend account for another year for 8$?  Where can i find DNS/Domain Manager?

This is from help section
1. Login to www.zoho.com/mail as Super Admin/ Admin
2. Click Domains >> Select the domain registered with Zoho.
3. The Domain Manager URL and the login credentials to be used with the URL will be provided. 

I cannot find Domain Manager URL as well