For the button: You search the button in the Buttons-tab of the Data Editor and change it's name field.
For the sensor tower:
If you want the circle to show up on the terrain, but just not on the minimap:
Data Editor -> Actors Tab -> Look for "Sensor Tower Radar" -> Change it's "Range Flag"
If you want it to disappear completely:
Data Editor -> Actors Tab -> Look for "Sensor Tower Radar" -> Events+ -> Delete "Behavior.SensorTower.On"
How do I remove that sensor tower dotted circle on the minimap? Also, how do I rename a command card button?
For the button: You search the button in the Buttons-tab of the Data Editor and change it's name field.
For the sensor tower:
If you want the circle to show up on the terrain, but just not on the minimap:
Data Editor -> Actors Tab -> Look for "Sensor Tower Radar" -> Change it's "Range Flag"
If you want it to disappear completely:
Data Editor -> Actors Tab -> Look for "Sensor Tower Radar" -> Events+ -> Delete "Behavior.SensorTower.On"