Say I have a Minion group of Antiquated Battle Droids (as shown on Adversaries chapter of the EotE rulebook).
Their Agility is 2 and group skill would be Ranged (Heavy).
If I had a Minion group of 4, that would mean 2 Agility + 3 ranks in Ranged (Heavy), coming out to 2 Proficiency 1 Ability when rolling for a Ranged (Heavy) attack?