i would really appreciate it if someone could shine some light on my lil problem

basically, i have 2 domains registered with the other hosting company.com and i have a VPS running plesk
I have created a new client in Plesk and for that client I have added 2 domains.
what else do i need to do? In the other hosting company.com under my domains i have eddited the name servers, is there anything else i need to do in order for the 2 domains to point correctly to each website on my server? dont i need to put in the IP address of my machine anywhere in the other hosting company?
something to do with DNS and nameserver settings on my the other hosting company account and on my server??? god so confusing

plesk is so difficult to use, i was so used to cpanel, shame i had to switch 

i really appreciate ur help
thank u so much
kind regards
p

yeah.. that it.. assuming that the ns ip are correct it should take a couple of minute to 48 hours to properly connect domain -> hosting..

optionally. you can make a ns pointer of your domain. like ns1.yourdomain.com pointing the ips of your vps.