Q: Is it allowed for candidates to use this kind of tool during the test? Would I get flagged or decrease my process score due to this?
It is not clear how the game tracks clicks on other apps, so if available I would recommend using another computer for an Excel file just in case.
Having said that, for what concerns the Excel solver included in my Solve Combo guide, I helped candidates who used it on the same computer and passed, so at least for that it should not be a problem.
You can find the Excel solver included for free in my guide at the link below:
▶ McKinsey PSG Solve Combo Guide
For any other questions please feel free to PM me.