to delete any extras I don't want to use
Do not delete just turn on or off

admin > config > Define Page Status > set as desired

I want to rename page 2 in the more information side box to About Us and rename page 3 to Disclaimer and if possible have that one open a pdf file instead of a page
Use developers tool kit to find tyhe file with the define for those pages and change ONLY what is in between the pair of single quotes
https://www.zen-cart.com/tutorials/index.php?article=38
https://www.zen-cart.com/tutorials/index.php?article=39

Can not change the link to a pdf of this page might look at easy pages