Its not really that hard.
These step's should help.
1. Listen to the brief, take notes if allowed
2. As any questions that pop into your head or if you want to clarify something.
3. Examine the equipment, think of possible solution.
4. Once you have a solution call your team over, explain situation, mission and how you think it should be completed it to them.
5. Ask for opinions, praise where it is due. Ask confirming questions (ie how long do we have for the task). Appoint people to tasks (2 i/c, time keeper etc)
6. Implement your plan, as a leader your job is control, do not try and lift every plank or tie every knot.
7. Continue to assess your situation. Think of how to improve. If someone is stepping out of line correct them (remember you are in competition for a place at Cranwell/ Sandhurst/Dartmouth), repremand gently though (dont ball them out hardcore)
8. Praise team members if its going well, by name.
9. If it all goes wrong ask for ideas how to improve it.
Got my through Junior Leaders leadership course and Frimley Park leadership course.
GCMK1