Both of your pages were created, yesterday and today. They won't show on the main page unless you insert links for them. Right now, you can find them by going to the Pages button at the bottom and selecting them from the list. They're named:
Step by step process to get online at groups.io with additional basic navigation (from yesterday)
A step by step on how to get online at groups.io the first time
On your group, you go to the Settings page. At the very bottom, you can set the Wiki options. On here, it's set to "Public can view, Subscribers can view and edit"
Duane
Duane