Community drop down on scholar theme how do you disbale it

HI i have the scholar theme installed and it comes with a drop down of pages called community see (screen shot) how do you disable or delete them? I am not able to edit the pages or find them to edit. I would of installed my buddy press pages to then but i could find them.

Also there is drop down called categories of posts I cant see where that is created i want to move or hide that also. Any clue to their where abouts would be grateful.

Thanks