there is no locust in ROC
I made a map on tft instead then but this doesnt really help. i want to collide with the unit but not being able to click on itwell the only way to do that is to give it the ability "Locust" (which I do not think is a ROC spell) that will make it unable to sellect and have no collision (paths trough buildings and other units)
As i know, if you set the selection circle in the object eidor to to some negative value (i usually use -5.), the players won't be able to select them. (You can type negative values by holding the shift while you click on the field) I don't know what about health bars, if you use this method.