What must the Primary Tenant do to log into a tenant's account via the Deep Security Manager Web console?

To log into a tenant's account via the Deep Security Manager Web console, the Primary Tenant must leave the Account Name field blank. This is because the Deep Security Manager allows for a seamless login experience where the Primary Tenant is already identified by the system and does not need to specify an account name for access.

By leaving the Account Name field blank, the Primary Tenant indicates that they wish to access the default account associated with their login credentials, allowing the system to automatically recognize and authenticate them without requiring additional input. This simplifies the login process and minimizes the risk of input errors that could occur by entering a tenant account name.

Other choices mentioned would introduce unnecessary steps or requirements that are not aligned with the designed functionality of the web console for the Primary Tenant's access.