Skoda Citigo Owner's Manual page 26

Securing of the child seat with the  system
  is a fastening system, which restricts the movement of the upper part
of the child seat.
The attachment points for attaching the belt for a child seat with the  
system are located on the back of the rear seat backrests
WARNING
Always refer to the instructions from the manufacturer of the child seat
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when installing and removing a child seat with the   system.
Only use child seats with the   system on the seats with the at-
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tachment points.
Only ever attach one belt from the child seat to a locking eye.
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Safety
Fig. 16
Rear seat: TOP TETHER
» Fig. 16.