This article applies to the 123-reg InstantSite package.
This article will explain how you can change the number of posts / comments per page on your Blog on InstantSite
Scroll down to the Create your website section and click on the InstantSite icon.
Click on the Login button next to the relevant InstantSite package.
Click on the Edit link.
In the Site map panel, click on the Blog page.
Cick on the Settings tab.
Simply enter a number into the corresponding field to the change the number of posts or comments that will appear on each page.
Click on the Save Changes button.