The whole process has to bigger parts:
In order to enter DNS records, you will first have to set do two things
For start, please log into your NameBright account, and go to My Account -> Domains -> (select your domain) -> Find Namservers tab, and click onto "enter nameservers" link as shown on the image below:
Then enter NameBright's nameservers
and click Save as shown on the image below:
To do that:
It should look something like the screenshot below:
Now click onto Add a New DNS record button again and this time enter the following DNS record:
It should look something like the screenshot below:
This screeenshot basically sums-up all you need to do on their end: