Windows 10: Lock Screen Saver independently from lock screen

I am in a group-work setting and all our lock screen user passwords are the same. I want to change only the screen saver password so if I walk away from my desk another person can't get on my computer. I don't want to change the lock screen user password as they're all universal. If you can't independently change the screen saver is there another option I can use to lock my computer after a certain period of idle time?

:)

 

Screen saver / lock screen

Open Start > Settings > Personalization > Lock screen

Scroll down to the bottom

Click Screen saver settings

Click in the list box

Choose None

Click Apply then OK

 

Screen Saver Settings / Lock Screen Freeze

when i have tapped and held on background screen.. attempting to find and use a screen saver I see nothing. I have found personalize and the list there which has Colors etc and Lock Screen. Lock Screen was the suggested link to find the Screen Saver but
if i click / tap it it freezes . This is a Dell Inspiron 15 7000 2 in 1 Laptop with 4 gig ram and a half Tera of drive. Brand New as of yesterday. It seems like a bug. I cant access Screen Saver easily at all. Not sure why Microsoft would change such a common
feature and make it so difficult to find or how to fix this irritating bug. Can you help me ?

 

screen saver, NOT the lock screen

Go Personalization, Lock Screen and at the bottom is Screen saver settings. This is not the Lock screen Slideshow.