If your invited then they want to see you. They don't invite 10 candidates and only provide spaces for 5. They maybe thin down the 10 to 5 after day one but all get their chance.
TDODAR
Time (how much time do you have? Fuel endurance? Fire? Icing? What is limiting your time? Maybe nothing so set a deadline for a course of action)
Diagnosis, what is the problem or more importantly how does that affect the aircraft and its capability. How will you get your flaps, gear, brakes. How will you go around?
Options, if you have one solid option and are short on time then that's enough. If you have time then explore a few others. Ask your colleague for another option)
Decision, if times short it maybe as simple as can we stop in that distance with this failure. With time you can run through BRAN benefits, risk, analysis and what if we do nothing of your two, three options
Allocate, who will do what and how
Review, constantly review your decision. What's changed? Does our decision still work. Maybe you now have more time, maybe the runway is now wet with a light tail wind.
It sounds like a right faf but it works really well. When you brief the approach not only brief what you will do but how you will do it. Not required for the sim as your not type rated but include automation and FMA's. Set yourself gates eg here I will be at .....kts, flap 1-2 etc. gear down at.....if you deviate from the plan verbalized why. This helps your colleague to support you by giving an easy point to intervene if your not flying the plan.
It maybe as fast as. Time....none we are on fire. Diagnosis......eng fire....aircraft is Cat 3 single. Options......can we go back from where we just took off? Probably pre briefed this. Decide....it fits what we pre briefed. Allocate....as we brief prior to departure, Review.....all the time until you get in your car and drive home.