Question
Where do I read the conditions about a bicycle kept in the hall?
The conditions about a bicycle kept in the hall are in the conditions document, under the section the schedule names. The schedule also says which version of the conditions this policy runs on.
A bicycle in a communal hall is in the home and not quite in it, and the schedule says which of the two the policy treats it as.
The frame number is stamped under the bottom bracket. It is the detail that makes a bicycle a specific bicycle.