If you want to receive your 2017 W-2 electronically you must provide your official consent no later than Jan 8, 2018.
If you have provided consent to receive your W-2 electronically in the past, you will have to do it again, because those records were not migrated to the new Colleague XE system.
Deatailed instructions are also available as a PDF on the Payroll Resources list.
Instructions for how to access and approve employee time are embedded within each user instruction guide.
Each user instruction guide contains a section for alternate supervisors.