Hide child boards

[nina-nina]

I want to hide the child boards of my forum and so far I have not been able to figure it out.  I would like to hide the child boards on the front page so that they are seen when the member click on the main link and, if it is possible, I would like to also hide the child boards of the child boards...

I have 1.1.11 and the theme is Web2.

Thank you