DNS using DNS Manager (external)

hello

i have question

if i use mydomain.tld point to NS1 NS2 NS3 NS4 NS5 to DNS Management
then at dns management i set
ns1.mydomain.tld IN A ip.ip.ip.ip
ns2.mydomain.tld IN A ip.ip.ip.ip

it will work ? to client-domain.tld IN NS NS1.mydomain.tld
and at cwp i insert my Nameserver as
ns1.mydomain.tld IN A ip.ip.ip.ip
ns2.mydomain.tld IN A ip.ip.ip.ip