Is there an effective way to give points per boss killed and for being on time to a raid, or will I have to manually set what each GRSS is, in the Raid-Event Associator.

Under your DKP Menu there is a section called Destinations. Here you can do what you need. Initialize a Zone. This will initialize the bosses and loot in an instance or world boss. You can make Custom destinations like OnTime. Here you also set the default point value for each rank of the members in your guild for the raid. When you have all of this setup when you import your snap shots all you need to do is select the correct destination for the boss and the points will automatically be assigned.

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Six Demon Bag
Jack Burton: Hey, what more can a guy ask for?
Egg Shen: Oh, a six-demon bag!
Jack Burton: Terrific, a six-demon bag. Sensational. What's in it, Egg?
Egg Shen: Wind, fire, all that kind of thing!