How do you adjust Drop Rate

Hi all,

I'm creating this simple mod where I mimic private servers of many MMORPGs where exp rate and drop rate are higher.

So far I'm successful with the exp part, but im struggling with the drop rate.

Basically I want to make things drop more frequently, like legendaries being twice more frequent to drop.

Im not asking to increase the quantity of the drop tho.

Anyone knows what database/variable should i be looking for?

Thanks!

How do you adjust Drop Rate