Hi,
To point your domain to shopify first you need to assign these nameservers to your domain
dns51.hndservers.net
dns52.hndservers.net
dns53.hndservers.net
dns54.hndservers.net
To assign nameservers to your domain from client area go to My Domains > Manage Nameservers
Once done go to,
My Domains >
Click on Manage Domain > Then click on DNS Management
Assign these A and CNAME record to your domain
Wait few hours for DNS propagation.
Regards,
Domain.pk Support Team
For any other queries mail us at Support@domain.pk