An Apt profile is divided over 5 screens. However, there are some controls present on all the screens, along the top line.
On the left, you see the Buttons tab is selected, and a target app is being chosen.
Note that the Contacts app is written in bold, meaning there are some preferences set for that app.
Target Selector Drop-Down List
Indicates the target to which the current settings apply. App names written in bold in an app pulldown are apps for which Apt has a preferences block assigned. This does not, however, mean that there are any preferences enabled in the block. (Note: from version 1.2 of Apt, the second and third items are *Tag 1* and *Tag 2*, which will be explained elsewhere.)
"+" Square Button
Tap to toggle the state of this button. When pressed, the target selector popup will only show apps for which Apt has a preference block.
Go Button
Leave Apt and launch the current target app. This button will not function for a VFS-based application unless Apt is enabled, because otherwise the necessary cleanup work will not be performed.
Screen Selector Tabs
Used to change the screen and indicate the current screen: Prefs, Prefs+, Buttons, Graffiti, Events.
Profile Changed Indicator
If a little box appears below a screen selector, it indicates that one or more of the controls within that screen have been changed (you can see one on the Prefs screenshot below).
To enable 5-way navigation support, press left, right or centre on the navigator pad. Once enabled it will remain until you exit Apt.