Use the following illustration to install the mounting bracket to a dropped ceiling rail.
Install the AP on a Ceiling Track
The AP630 ships with a mounting bracket that lets you easily install it on the rail of a standard dropped ceiling grid.
AP630 Hardware User Guide
Page 3
Once the bracket is secure, you can install the AP by aligning the red dot on the bracket with the red dot on the AP. Keeping the dots aligned, raise
the AP up until the bracket fits into the circular depression in the bottom of the AP. When the AP is firmly seated, rotate it clockwise (??) until it clicks
in to place as shown here.