Question: Alpha Strike Ruling | tcgmode

I have trouble understanding Alpha Strike Do I have to/Can I do: \- Blue: Deal 3 Dmg to Stellacorn and 3 to First Mate \- Red: Deal 2 to all 3 of them \- Yellow: Decide how much dmg I Deal as long as I Deal at least 1 dmg to any unit? Can I ignore a unit at a BF and only deal 6 Dmg (equal t...