Connecting existing domain to squarespace

Hi everyone I am trying to connect a 3rd party domain I own to my squarespace site.  I followed the instructions but the 3rd party provider only has available nameserver 1 and nameserver 2 for connecting.  It does not have the same setup in the instructions.  How can I get the nameserver details for my squarespace site to enter in their panel ?  what should I enter ?

Thanks

See image attached.