The Clients tab of your NinjaCat account houses the client profiles for each of the advertisers you send reports to.
If you need to update or remove a client profile from your Clients tab, you can easily make changes by first clicking on the Action button next to the client you wish to update, and then click on Client Settings.
From here you can change all the settings established for your client, and even remove them from your list of clients.
To remove a client from your NinjaCat account, in the Client Settings section click on the Account Deletion tab at the bottom. Then click the check box and click Update Client.
This will remove the client profile from your NinjaCat account.