New server WHM require to you complete and fill up some forms when your first time visit to whm. Do this first click the continue button on the left fill up some require informations like email nameservers...
When you complete first time visit, you will see a big left menu on the left, find the link
Create a New Account under the Account Functions left menu. Click it and fill up form thats it.
If you still cant find it copy paste below link to your internet explorer and change IP to your server ip.
Code:
http://YOUR_ServerIP:2086/scripts2/wwwacctform