Hello I was wondering about how to list domains for sale on multiple platforms like afternic, sedo, godaddy, uniregistry. When changing the nameservers is that just to prove ownership of the domain and you can change it after or do you have to leave it on that platforms nameservers to continue using their market place? Can I list my domains on all market places and just leave the nameserver on the platform that I want to use as my landing page? Thanks!