Steering column trim loose

[Brinyan]

I have a 996 Turbo. The plastic trim behind the steering wheel, where the indicator & wiper stalks are located into has come loose. When the indicator stalk is moved, the trim moves also.
Any ideas as to how this trim can be fastened? I haven't had a chance to look yet, so realise it may be a simple task, but any pre-advice welcomed.
Thanks