From the screenshot below you can see a typical view of the Settings page. From here you can Check for Updates manually, and toggle on/off auto updates.
Under Current Content it shows what Group you are currently viewing, and from the Switch Content button you can choose a different Group if available.
If you use Outlook for your email client, this is where you would toggle 'on' that option so that it appears when you push to send a Follow Up. Please note: You do need the Outlook app on the device as well.
The last three sections are more specific in terms of usage and availability. The BCC, Language and Kiosk Mode are more advanced functions that may not be available in all instances.