How can I pay tax ovr to SARS for my investment income?

I would like to know how do I pay my tax when I receive mi IT3B CERTIFICATE am I suposse to register as a PROVISIONAL TAXPAYER how do igo about doing this it is my first time and is it possible to register as a PROVISIONAL TAXPAYER on EFILLING if so please provide me with steps how to do so.

Is your investment income as per your IT3B more than R23 800, as this is the tax exemption SARS offers you now, if it is, you can register for Provisional Tax via SARS E-filing.