remove the keychain from MACBOOKPRO 2015

hi

I have follow up steps which is in Apple support, and i don't find any option for ADAVACE which i need to choose to deactivate keychain.

here is the detail of this system

MacBook Pro (Retina, 13-inch, Early 2015)

processor 3.1 GHz Intel Core i7

memory 16 gb

graphics Intel Iris Graphics 6100 1536 MB

thanx