Make sure there's a Board render widget with a "Below the article" board. (If not, create it in Boards > Board widgets)
Go back to Boards > Boards > "Below the article" board
Add a Linked board widget, and select "News" - as above - done!
External linked board
How to link someone else's board in my board.
If you have many sites in your hosting environment, and want to a specific board (with content) between them, it's possible with the Linked board widget.
1. Create the to-be-linked board
Open the source sub site > Boards
Create a board with the widgets to be reused, and shared.
Make the board shared and available for all your other sub sites. Checkbox to the right.
Example: Create a board to be externally linked
Note! When making the board available like this, any sub site on your environment may access and display content from this Board, without credentials.
2. Add it to your other sub site board
Switch to the target sub site
Add Linked board widget where you want it.
Set External linked board to the shared board you created in step 1.
Example: Externally linking a board
3. Optional: Use source credentials to fetch content
What articles are rendered by the linked board? You probably have different units for the two sites. Site A having access to some articles, site B other, some on both.
So by default the External linked board will show the article site A has access to on site A. And the articles site A has access to on site A. (A and B are channels in Writer.)
The setting Render board from source site make the linked board rendered on the site where it was created. So site A content may appear on site B, despite Writer channel.
Example: Render board from source site.
You probably don't want to use this setting!
Use it with consideration. You can normally get the desired effect with External linked board and sharing each article by adding multiple Channels in Writer.
