Change Case — Pages — macOS and iOS 11
You can easily switch selected text between cases (upper case, lower case, capitalize).
You may need to do this if you find you have accidentally activated caps lock and continued typing a few words.
On a Mac
Select the text you want to change then use the Edit > Transformations Menu item (see image below).
On iOS — these details can be found in AUSOM News July 2018 HERE