Hi, can you not take it back to the dealer if you are under warranty?
If not, it will be either clipped, or the more modern way is highly sticky backing on the trim, no holes, no clips.
If the later which is stick on trim, then your laughing, as its just pull off gently to avoid paint damage and stick on another. Cheaper method....If you want to do a DIY repair job, just buy some black sticky back tape (the strong stuff for cars, that you get in Halfords and the like) and stick back the bit of trim that has come loose.
All the parts, ie, new sticky back trim or clips and trim can be bought at the Ford parts department, at cost. Have fun fitting it. Easy enough job to do.