Running Windows 10, the newest version of Realm Works
Laptop: Lenovo Thinkpad x230
TV = Panasonic VIERA TC-P55ST50 55-Inch 1080p 600Hz Full HD 3D Plasma TV (2012 Model) [I have it set up behind and to the side of me. I don't use as a battlemap].
Connection: An HDMI cord is connected to the TV to an HDMI to MiniDisplay Port converter which is connected to the minidisplay port on my laptop.
As soon as I connect the cord my computer usually detects the TV and extends the display so that I essentially have a second, blank desktop on the TV, with my computer as the primary.
If it doesn't display, I first try the input button on my TV remote to ensure I have the correct HDMI port selected as the input. Then I will use Windows Key + P to bring up Windows 10's "Project" options and ensure that "Extend" is selected.
Assuming that is all set up correctly and that I can move windows from one display to the next, then I should be set to use player view.
Let's say I want to share part of the map for an adventure area.
First, I make sure that I have shared the topic at the top level. That doesn't share EVERYTHING in the topic, just the title and allows me to share maps, snippets, etc. so I can display them in the players view.
You also have to share the map or other snippet(s) in the topic you want to share.
Then you can just right-click and select "show in player view" from the context menu.
This will also open the Player Window and the Player Preview tab. By default it will show the player view on the primary screen. In my case I want to move it to my TV, which will be listed as "monitor 2". To change which monitor the Player Window displays on, click the icon that looks like a monitor with a spyglass in front of it.
To actually have the content shown on the Player Window you also have to select the content to view. This may seem like an unnecessary extra step, but it is helpful because it is common that DMs will prep a number of items in the player view before the start of the game and they can just toggle items on and off as they play. To have something you put in player view display in the Player Window, you need to click the bubble in the item's window title bar or next the the title of the item under the "content shown" tab on the left.
You'll note that the map is black. That is because I have fog of war on and have not revealed anything. As I reveal areas of the map and save, the view in the players window will refresh. Fog of war and tips for syncing and resizing maps as you play is a topic for another discussion. The above should be enough to get you started with Player View.
This wall of text and screenshots may make it seem complicated, but it really isn't. A video would be more effective to show how to do this and how fairly simple it is, but I'm not set up to make videos.