Sibelius will let you put p,i,m,a over regular notation. If that is what you are asking.
Select a section of notation you want to add fingering to. In the TEXT tab, expand the Plug-in heading. Select the "Add text to the selected notes" plug-in. A key pad will open. Expand the bottom button. Select "p.i.m.a". Select the "options" button to see/change what the number buttons do. Witth default settings, selecting 0,1, 2 or 3 will add the desired letter above the notes.
There isn't a whole lot of documentation on plug-ins. Changing from one software to another can be tricky. Good luck.
Sibelius 7.5, W10,i5,16 GB ram,desktop