Go to Administration to the domain you want to remove (Administration → My Domains → select domain). Click on the red button at the bottom Remove domain from hosting and park.
Select Redirect Domain in the left menu and set the address where you want to redirect the domain.
Upload a single file called
.htaccess to the domain's FTP
directory, which will contain the following:
RewriteEngine On RewriteRule ^(.*)$ http://kampresmerovat.cz/ [R=301]
Of course, instead of the kampresmerovat.cz domain, fill in your domain where you want to redirect the traffic.