hasokeyk
i'am sorry, i understand it incorrectly..
If you need to set your server "a" to be the ns record server of the other server "b", you only need to add an A record in the server "a", and then modify the ns record as "a" in the other server "b" Server resolved domain name
If you need to modify your server's ns record, you need to modify the two ns records of the image.
