Press 'Select' F1 then 'Route' F2

Select the desired route by scrolling ⬆️ or ⬇️ then press the ✅

You can modify your starting stop by pressing 'stop' and scrolling through the stops and pressing the ✅

On Diversion

You can select 'Detour' and press ✅ this will announce the bus is on diversion until you hit ✅ to confirm back on route