How to submit an older tax return than the year you are in via eFiling

I have filed my 2015 Tax tax return. Now SARS wants me to submit my 2011 Tax tax return via SARS eFiling. I have the 2011 IRP5, but I don't know where to find the IRT3(a)

please help. How do I get the form on my profile to fill in.

You need login to SARS SARS eFiling and navigate to the "Returns Issued" menu option and then request the Tax Return for 2011. The details from your 2011 IRP5 should automatically be pulled in to the Tax Return. If this is not the case, you can manually input the details from your IRP5.