Thanks for your question. For entering CPP, Please follow the following instructions:
Go to the Income tab, select T-slips, select T4A(P).
For entering OAS, Please follow the following instructions:
Click on the INCOME tab at the top,
then click on the link for T-slips in the drop-down list
then on the t-slip profile page check off the T4A(OAS) slip and click continue until you get to that slip.