Tap the Settings button beneath the module description.
On this screen, you can see the current default article security, summary display, and stories per page settings.
To change these settings, tap the cog menu in the top right of the
screen and select Edit. Default article security tells the system to set article security to either public or private automatically when you create an article. For the difference between public and private security, please see Set article security. Summary display allows you to choose whether a Teaser or the Full article will follow the Article title. Stories per page allows you to enter a numerical value for how many articles you would like to be displayed at once on the Articles page.
Tap the button: Update Articles module settings to update the default article security, the summary display or the Stories per page.