Status for other extensions on Soundpoint IP 601 SIP display

We’re using a Trixbox (FreePBX, Asterisk) alongside Polycom Soundpoint IP 601 SIP phones, and I was curious as to how we can configure the upper left-hand portion of the display to show the status of the other extensions/lines in the office. I didn’t see anything on the Polycom itself. Perhaps this question is better left to the Trixbox forums, but I imagine there’s some Trixbox/FreePBX users in here.