tell application "Microsoft Lync"
	activate
end tell

tell application "System Events"
	tell process "Microsoft Lync"
		tell menu bar 1
			tell menu bar item "Status"
				tell menu "Status"
					click menu item "Be Right Back"
				end tell
			end tell
		end tell
	end tell
end tell

--go available
tell application "Microsoft Lync"
	activate
end tell

tell application "System Events"
	tell process "Microsoft Lync"
		tell menu bar 1
			tell menu bar item "Status"
				tell menu "Status"
					click menu item "Available"
				end tell
			end tell
		end tell
	end tell
end tell