Exploration is your friend
Let me walk you through a simple example.
With the Overview pages > my Page tab selected
ensure the lock icon is open
right click on the desktop image shown to the right in aquasuite
select Add new item
then under the Display tab select rectangle from the drop down list
click Load preset and you will see some HTML code
click OK and a rectangle will be displayed on the aquasuite desktop image
you can move the object by grabing/dragging and/or you can stretch it also
or you can edit it by right clicking on the object and selectin Settings
which will bring you back to the HTML code
for this exammple I made four changes:
1: made the background transparent
2: increased the border radii from 5 to 15
3: decreased the border thickness from 5 to 3
4: changed the border color from red to blue
you can place the overview page on the desktop by clicking on the orange arrow on the my Page tab
EDIT: click
HERE for an example of what can be done