@maddin,

There is no shortcode for boards. The shortcode you mention is the root of all boards, it's not the first board page or shortcode. All boards are available by paths (board slugs), so your second board can be seen using the board slug: https://wpforo.com/docs/wpforo-v2/categories-and-forums/forum-boards/#creating-a-new-board

ok, but to be clear:

I have two pages on my homepage and want to show Forum 1 on Page 1 and Forum 2 on Page 2.

To show the forum on the page, I need a shortcode, right?! (Wordpress)

The page with shortcode will always show the first board. For the second board, you should insert a custom menu (Title / URL).

ok got it and fixed problem. Thanks!