To configure what pages show on a Blogger site, visit this help page
The steps offered on how to show pages on a Blogger site are:
We will change our 'Archive' Widget to reveal less pages than are shown by default.
Currently, our blog shows a list of pages like this:
We will change the Blog Archive section to be a drop down menu instead.
Following the steps, we visit our blog, and then find an click "Layout" from the main menu along the left hand side menu:
Next, we scroll down the page until we spot the "Archive section". Inside the Archive section, we look for the edit link and click it.
Clicking on the link opens up a dialog box which we can use to adjust the layout of this widget.
We want to clean this section up, so we look for and select the "Dropdown Menu" radio button near the top right of the interface.
When we are done, we click "Save" and go back to refresh our page to see how it looks.