Follow the instructions in this article to delete a Security Administrator.
1) Log in to your customer’s control panel
2) Select the ESET tab
3) On the ‘ESET Subscriptions Summary View’ page select a Security Administrator by ticking the checkbox next to an ESET subscription ID
5) Click the Delete Security Administrator button.
6) A browser pop – up will appear, click on OK to confirm.
Important Note: You cannot delete all the Security Administrators. If you do so, you will not be able to access the ESET portal. Your all the licenses will be cancelled from the ESET site.