AGS reminds me of the earlier 2000 period when ford used the 4F27E auto box – you could use D or push to the right for M +/- to shift manually, though that had P.
Parking vehicles with AGS or similar systems without P
To park on levelled ground: Shift gear selector to N
When parking uphill: Shift gear selector to D
When parking downhill: Shift gear selector to R
Do bare in mind, the auto journalists can be very critical especially Matt Watson from Carwow. I would arange an extended test drive, so you have the vehicle by yourself and come to your own conclusion 🙂
Driving section of video….