how to make subdomain of subdomain in

asking you admin how can we make subdomain of subdomain?
ex my website:

my subdomain:

my subdomain of subdomain:
can i make it?

Have you checked the Subdomains section in your control panel?

yes i but can only able to make one-tier subdomain
i am asking about subdomain of subdomain?

No, you can’t make subdomains of subdomains. You’ll need to upgrade your account to be able to do that.