If you want to setup your website on an A Record / Naked Domain (e.g. cosmicvent.com, note the absence of a 'www' prefix), login to your DNS web console and
If you want to setup your website on CNAME e.g. www.cosmicvent.com
For the above two examples you need to have a website on websrvr whose domain is set correctly in the websrvr control panel e.g. 'cosmicvent.com' in the first scenario or 'www.cosmicvent.com' in the second scenario.