Hello,
You may change static block that will be shown in prefooter via Appearance > Widgets > Pre Footer area, and of course you may edit all static blocks, which you have, according to your needs using VC or even create new blocks.
Also, you may use such options as “Use custom pre footer for this page/post” and “Use custom footer for this page/post” in settings of a page > [8theme] Layout options.
Let us know if you need any assistance.
Regards