How can I use voice commands to have POI appear on map?

2015 Prius Five, which I have had now for two days. Somewhat familiar with the NAV system since I have a 2006 Lexus -- not too much has changed in nine years! I have read the manual and searched this forum.

Here's what I am trying to do -- I would like to use voice command to have gas stations POI appear on the map. I can get them on the map manually via the touch screen, but I would like to do so with via voice.

In my Lexus, you simply say GAS at the prompt -- anything similar here?

ALSO, can I have the POIs on the screen turn OFF via voice command (e.g. "POI OFF" which works in the Lexus). I know how to do it via touch screen, but I'm trying to do it voice.

Thanks!