Attach PDF for state tax credit

I have income that is taxed in two states and need to attach a PDF of my other state tax return to my LA tax return. I have searched and searched how to do this. I found this one message below. However, I do not see the OTHER SITUATIONS and the PDF option for attachment. Can I get some more help here? Thank you.

Go to VIEW; select STEP-BY-STEP; then select STATE TAX; look for OTHER SITUATIONS, go to the PDF ATTACHMENTS option, and follow the steps...you will be asked to name the document and then to attach the PDF file.

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