Regardless to how easy you believe it to be, this weekend we shall only be reducing the windows to one third.It takes more than one member of the staff to change the spawn timer of bosses?I really find that hard to believe.
Someone already went thru them all and changed their spawn windows and reduced it by 2/3. All they gotta do is go back and change the minimum and maximum spawn time and reduce the range.
It is a simple and safe change that can cause no errors that may harm the game.
We may change it to fixed in future when it is more feasible to us but for this weekend it shall just be reduction.