To make the "2020 Tokyo Olympics" Home screen option appear:
1) Go to Settings/Home Screen and show "Featured Free" + "Movie Store and TV Store" + "My Offers" (show them all).
2) The "2020 Tokyo Olympics" setting then appears both here (Settings/Home screen/2020 Tokyo Olympics) and at the Home screen and is enabled ("show") by default - you can choose Hide to disable it.
I had the display of My Feed turned off on all three of my current Roku installations. 2020 Tokyo Olympics showed up on 2 of the 3 (Streaming Stick+, TCL Roku TV) but did not show up on my older Streaming Stick.
The instructions from @StreamerUser above added 2020 Tokyo Olympics to my Streaming Stick as well. (After the fact, I'm not sure that 2020 Tokyo Olympics showed up in the Settings/Home screen listing immediately, but it was definitely there when I returned to the actual Home screen, and later when I returned to Settings/Home screen.) After doing this I could then remove the options I did not want shown and 2020 Tokyo Olympics stayed in place.
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