Using IF formula in spreadsheets

Question

I have a table, example below, where users select the Priority and Complexity from a list of options and a number is assigned in the Rank column based on the combination of item

Answer 1

A colleague has now solved this for me, thought I'd share it here in case anyone else can benefit:

=IF(F2="High",IF(G2="Simple",1,IF(G2="Complex",2,IF(G2="Unknown",1))),IF(F2="Medium",IF(G2="Simple",1,IF(G2="Complex",2,IF(G2="Unknown",2))),IF(F2="Low",IF(G2="Simple",2,IF(G2="Complex",3,IF(G2="Unknown",3))))))