few options not available
From the utilities option , there were option for Txy and Pxy diagrams. but , there was no option for (T)xy i.e.,constant Temperature - xy diagram , as well as no option for (P)xy diagram.
Are you using the cross-platform UI? In the cross-platform UI, options to generate (P)xy and (T)xy are not available. If you are using the classic UI, then you will find the option to generate (P)xy and (T)xy. Please note that Windows and linux OS supports classic UI as well as cross-platform UI. MacOS supports cross platform UI only.