The close-ups of the button presses were probably deliberate (probably the way one of their tech consultants said to do things and/or the director's personal ideas about the buttons) and likely were done by stand-ins shot at another time. I don't know this for sure, but it's often the case with shots like that.
A fun semi-related tidbit about the bridge buttons that comes from Doug Drexler when he was on ENT doing "In a Mirror Darkly". On the Defiant recreation bridge set they actually put small labels on the buttons because they thought that if TOS was real, it would be silly that they weren't actually labeled. They found that even though they were filming in HD you still couldn't see the little labels they made, even in the close ups.