FelixTch wrote on Apr 1^st, 2021 at 4:07pm:

on P3DV4.5 i found out that there is no app or dep options after filling the flight plan, I mange to select the departure procedure but when I go back to dep/app and go back to index there is no options there to select the approach procedure

On the CDU, on the DEP/APP page, click on the LSK6L key beside <INDEX, and it should then display them for your departure airport, and arrival airport.