Step1: Press Ctrl+E to move to the Search field, and then press the Tab key. You hear: “Profile, app settings, and more.”
Step2: Press Enter. You hear: “Change your status.”
Step3: Press Enter to open the status options menu. Press the Up or Down arrow key until you hear the status option you want, and press Enter to apply your selection. Your availability status is changed and the focus returns to the Profile and app settings menu item.