you know how when u get a scv, marine or any unit in cat and mice and they spawn right next to the probes...how do you do that? thanks...

You need to make a location somewhere (it doesn't matter where), then use the "Move Location" trigger to move the location to the probe.

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Player 1

Current player brings at least 1 Protoss Probe to 'Anywhere'

Move location 'Probe 1' to Protoss Probe owned by Current Player at 'Anywhere'
Preserve Trigger
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You'd need to make an additional location for each player with a probe. Or whatever the unit is. From there, you can move units to the probe by having them move to that location. This is a VERY useful technique.

You have to constantly center a location on the probe. Just to clear up any confusion, in the case that there is, the action is "move location" (in the drop down window), but the text will say "center location" after you click on it. You have to preserve trigger. The condition could be a "bring condition". You also need to preserve trigger. Hyper triggers will make the centering faster and smoother. Lastly, you simply have the unit created in that location.

EDIT: Slightly faster than me, damn it. . .

aite guys im gonna test it thanks

No. You can reuse the same location for all players because triggers are checked player by player.