Right then, let me try again. Thanks for your help so far.
My sub report has the following tables:
EntryLog
--------
EntryID (1, 2, 89, 100)
StartTime (Decimal such as 8.5 for 8:30)
EndTime (ditto)
UserID (4, 5, 6, 7, 8)
NominalID (56, 67, 68, 69)
Nominals
--------
NominalID (56, 67, 68, 69...