Go to the admin panel

Select 'Pages'

Choose the page you want to customize

Go to the page you want to edit

Scroll down to the footer

You will find 'Edit this page' in the downright menu

Select the section/block of the page you want to customise on the left. If you are not sure which section you should have, you can click a few to orient yourself where you are on the page.

Then scroll to the relevant text field in an unfolded section and edit the text.

Press 'Close and Preview' and then 'Save' again in the bottom right corner of the page.

Move your mouse over the page and you'll see a plus sign. Click on that plus sign and add the sections. If you're not sure which section you should have, you can click a few of them to orient yourself where you're on the page.

Then scroll to the relevant text field in an unfolded section and edit the text.

Press 'Close and Preview' and then 'Save' again in the bottom right corner of the page.