under the heading Enabling Document Storage in iCloud Drive tells me to add a key to the Info.plist file and shows an example which I've cut and pasted below:
<key>NSUbiquitousContainers</key>
<dict>
<key>iCloud.com.example.MyApp</key>
<dict>
<key>NSUbiquitousContainerIsDocumentScopePublic</key>
<true/>
<key>NSUbiquitousContainerSupportedFolderLevels</key>
<string>Any</string>
<key>NSUbiquitousContainerName</key>
<string>MyApp</string>
</dict>
</dict>
When I look at the Info.plist file in Xcode, it doesn't look like this. It looks like a list with controls that allow me to select from lists of options. How do I add the keys this documentation tells me to add?