All ZTs delivered new to Australia had these child restraint anchorages fitted. Are these what you mean? If so, there is a captive nut fitting in the seat frame to accommodate them. However, when I imported old 206 from the UK, the captive nut was not on the frame but it may well be in LHD cars, although the hole to take it was. To meet Aussie standards, I had to use a nut and bolt to hold the anchorages in place. This required some fiddling to ease the upholstery away from the seat frame and then to hold a nut in place but it works and there is no evidence of tampering.
I use old 206 daily and love it. It does exactly what I tell it to do and never answers back. Especially it doesn't beep, ding or hoot at me if I fail to do up my seat belt, use the clutch and handbrake in the "wrong" sequence, leave the key in or any number of other so-called "incorrect" actions. We are up to 200,000 kms now and still climbing...