so if i am understanding right you want an effect like a RTS so you could move the camera really fast across the map.
Now lets talk about camera there a cool plugin call scroll to.
Best way to do this. Use an invisible sprite put the scroll to on it. next part is tricky because this require Math from hell Like i do not even know where to begin because it depend on how you have your mini-map setup. I suppose you could do something like during scrolling behavor just see where and if there a math relation between minimap and real game.
One idea you could do is called reverse engineering set up a text box with a every tick condition and now I want you to make two sprite oneis for ingame camera and other is the ingame minimap camera. Next add this in as an action Set text to (Ingamecamera.x &","& ingamecamera.y&"|"& Minimapcamera.x &"," &Minimapcamera.Y)
This would tell you the exact X ,Y of your camera in game sprite and the minimap sprite. Now when you run it write it down and make at least three set of number for each position. From there try to work out a math function that would give you the result you want on paper.
For example If i had the number 100 ,100 for ingame and then mini map ingame only gave me say 200,200 we would know that the relation between the two number is divide by 2. So it would be like when mouse overlap mini map and then when the mouse touch a spot in the mini map we would know minimap sprite is at somewhere mulply of 2 so then we move the camera sprite at position x,y for both it would be like minimap.X/2 for the camera position
But like i said every game is different in their minimap relation to ingame so you are going to have to do reverse engineering. And if you need help then try to give us the numbers to see if we can work out a math function for you.