If you recieve the following error:
Error 403 'You are not authorised to view this resource'
When attempting to create an event whilst logged in as a Super Administrator, then you probably:
enabled authorised user mode for event editing/creation
To fix this you should setup the Super Administrator as an authorised event creator through JEvents cPanel -> Authorised Users or disable authorised user mode and use the Joomla! ACL.
Event creation permissions (and other config options) are described in the configuration documentation available to all club members (bronze, silver and gold) available from here.