Question on Minimap Triggering

I have a map in which iwish players to STUMBLE onto randomy located Goblin Alchemists (used as superweapins, but anyways), and whenever i play the map, i remeber that it wouldn't be 'random stumbling' if the damn things appear ON THE MINIMAP!
So how do i hide specific buildings from showing up on the minimap using triggers?

-Thanks
-(Note ROCWE)
-Horus

There's a boolean field in the object editor called "Show in minimap". Make this false. Works for most units and heroes too.

For shops, there's another field called "Show neutral building icon". You're going to want to remove that too.

there should be a certain stat or minmap thing on the unit that saids "Hide from Minimap" or dont show on minimap

as for triggers.. err ill look to see if i can come up with anything

Do you really mean the object editor? OR are you referring to the unit editor?
The unit editor...well let me attach a screenshot..for the goblin Laboratory (i called it by its war 2 name for some reason :P)
Also a screenshot for the object editor, are you answering in terms of tft or roc? Please note my sig...

All you gotta do is:
1.) Save up for TFT
2.) Buy TFT
3.) Do what dragnstitch said
No jk
If you can fiind something in the shops unit editor, that says like, is shown on minimap: Yes or No, pick no
if not u cant