They're separate amendments, but they both amend the same section in the Income Tax Act. They're both in clause 3.
Yes, there is a form for an employee to claim deductions for amounts that the employee has to pay in the course of their employment, but that is only possible in limited circumstances. In circumstances where it's possible, the employer generally has to provide a form to the CRA stating that the employee had to make a payment in the course of their employment. The requirement for a paper signature on that form would be eliminated.