If you're requirements require app leveling domain-name labeling, we do support this. Before carrying out these steps please reach out to email@example.com.
Hosting your app on mentor.example.com, will require 2 new DNS, domain records on your side.
An example of the two records is given below:
example.com. TXT "google-site-verification=xxxxxxxxxxxxxxxxxxxxxxxx" mentor.example.com. CNAME my.togetherplatform.com.