How do you disable/hide this hotkey towards the bottom right of my screen with the marine's face on it? It's set as f3 for me in-game and selects my marine unit. Hotkey is circled in red in the attached image.
Found this in an earlier forum post: It's in the Data module under the Cameras tab: click on Default Camera and find Zoom Layers and expand the submenus to show the fields Distance and Angle of Attack: set Modify: Disable this field for each Zoom Layer in Camera Default in the Cameras Tab under Data Module.
If I understand you correctly, that you don't want the player to be able to move the unit and/or attack with the unit causing it to move then maybe you can try the Action 'Make Unit Uncommandable'. This would allow the player to click on their unit and see its abilities etc but the unit will only 'do' something when an enemy comes within range of it.