Hi just curious about these 2, every time I do it always gt it wrong. Can you explain to me the difference in what I should be reading with the lowest level in IMC, and when you first cross the aid,

The questions:
7. Glenn Inns to Inverell in OZY, carry out a GPS arrival procedure, after you pass 6nm from Inverell GPS the raim warning light appears. The lowest level you may maintaining in IMC?

8. Glenn inns to Inverell. Mintainiee recent on GPS/DME arrival. The lowest level you may descend in IMC before you first cross the aid on the NDB is?

Thank you