You need to enter your government pensions by entering the T-Slips. If you are getting other forms of pension then you likely have slips for those as well.
You can go to the T-Slips page, check off the slips you need, and then click the Continue button to go through the slip pages.
To get to the T-Slip page, use the “Find” tool 🔍 to search for “t-slip”. Select “T-Slips” from the list and then click the “Go” button.