Hey Craig,
I am sorry for the late reply.
So, these are the answers to your questions:
1. I check every start of the day or morning for more profitable robots
2. I do not close the positions
3. I close the position if I have to change the robot
4. I believe that before the news, the robots close the trades automatically but in case it does not happen you can close them manually
Hope this helps!
Kind Regards,
Nikos