You can paste more than one Placeholder Text code and other info on a Content Box. There isn't a limit on that. If you get any issue with more than one code getting translated/showing up on the page, please let us know.
You would want to format the Placeholder Text code in the Content Box how you want it to translate/display on your page - i.e. perhaps you would separate via a new line break (just hit enter on the Page Content Box). You can check out how your homepage is doing it now (it is actually using divs for the formatting). There is some info on divs on our user manual topic here: https://www.ultimatewb.com/content-management/further-formatting-webpage-with-divs--without-coding
Creating a page twice would just display the page twice on your website.