You can set the privilege level in the CLI by using the set command. Changes to privilege level settings apply only to the session you are in. They are not persistent across sessions.
The following example sets the privilege level to advanced and then to admin:
vs1::> set -privilege advanced Warning: These advanced commands are potentially dangerous; use them only when directed to do so by technical support. Do you wish to continue? (y or n): y vs1::*> set -privilege admin