Oops, sorry Naresh. Ignore my previous post as I see you're after a different category of seat (i.e. 9 months upwards)!
Anyway, the instructions for the Tobi seat are found
here. I think Maxi-Cosi's
UK distributors should be able to answer any other questions you have regarding the belts (especially as the Fitting List at:
Maxi-Cosi isn't a big help
)