Perhaps I can help.
If the pagination in the version before members of this committee is the same as mine--that is, the bill as passed by the Senate--page 21 in annex 2 has schedule II, schedule VI. What this doing in clause 4 is seeking approval to add schedule VI to the Canada-U.S. treaty implementation act.
And for completeness, schedule VI comprises the amendments, the protocol amending the Canadian-U.S. Tax Convention.