How to Split a Page into Multiple Pages?

I’m using the BuddyPress Business theme. I have a page that I want to split into multiple pages for easier reading.

I tried placing the <!–nextpage–> Quicktag under the Text tab where I want the page to split. But, WordPress is ignoring the code and still displays the page as one continuous stream.

So, can you please tell me what I need to do to split the page into multiple pages?