Confusion about turning on Windows Defender to do a scan

I'm presently using (running) Avast Pro and Malwarebytes Anti-Exploit-Free, with weekly running of CCleaner, Malwarebytes Anti-Malware, and AdwCleaner. I do a lot of browsing and haven't had any problems with this approach. However, I got the hankering to also keep Windows Defender up-to-date and to occasionally run its scan just to see see if anything comes up. So, I go to WD with the expectation that it is turned off and find that it may not be. I would go to update&security>windows defender and find, to my surprise, that real-time protection and cloud based protection are turned on, but grayed out. Furthermore, when scrolling to the bottom of the screen and clicking Open Windows Defender, I get the message that "WD is turned off and not monitoring the computer." I then went to Brink's WD tutorial (Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums), but I am confused as to how to proceed as I don't know which option to use, or even if this is the right approach???

...........but I am confused as to how to proceed as I don't know which option to use, or even if this is the right approach??? .............

If you have Windows 10 Pro, use Option One.
For Windows 10 Home, use Option Two.

OK, as I have Windows 10 Home, it will be Option 2 for me. But before I proceed, some more clarification questions. Using this procedure will turn on WD and allow me to run a update and scan and then allow me to turn WD off -- Yes/No? And, when I do run WD, should I turn off my other anti-virus apps? Thanks for your help.

RE :Using this procedure will turn on WD and allow me to run a update and scan and then allow me to turn WD off -- Yes/No?

Yes. Use the tutorial to turn WD On or Off.

RE : And, when I do run WD, should I turn off my other anti-virus apps?
No. Just run the WD scan and then turn it off afterwards.
P.S. Avast is supposed to turn off WD anyway.