Orca Forum- how to add new block to page builder

Is there a way to add your own custom block in the page builder set up? I want to have the forum home as the main block on the front page but currently I can only add the recent forums block which seems to have an issue linking to the actual forums.

What am I missng here?

I should add that the link to the site is here:

http://thegorbals.co.uk/ideasforchange.html

If I can get the links to work from this then I would be happy enough. NOt sure why they are not working as the others front the top menu are.

How can you create a special block in the Page Builder that you can incorporate in a page layout?

How can I set the Forum Home as the start page on the forums rather than the recent forums block?

Any specific reason as to why you have your dolphin site inside of a iframe?

Thats the reason your forum post block on the home page does not work. The links open in a new tab. But iframes do not support that feature, so the link is breaking out of your frame.

I am surprized you not having other problems. I do not really think dolphin was designed to be run like that.