Payback PB and Discounted Payback DPB on Texas Instruments Calculator

I just purchased a BA II Plus calculator and am working through various tutorials to get familiar with it. Can anyone advise me on how to calculate Payback (PB) and discounted payback (DPB) on the Texas Instruements BA II Plus?

I can’t seem to find these keys anywhere. Or do I now have to purchase the Texas Instruments BA II Plus professional in order to calculate these.

I am assuming that these functions are part of the CFA curriculum?

Any guidance would be appreciated.

PB and DPB automatic feature is only available on BA2 pro. For BA2 plus, you will have to do the calculations manually.

And these calculations only appear on level 1-unless CFAI changed the curriculum from last year.