Orchestrator problem - robot is down/ change


i’m new for Orchestrator, just want to check the following scenario, whether the Orchestrator can support the following activity.

Scenario: assuming 5 robots running the same process to reduce the overall executing time.

  1. what if i change 1 process then saved and published, can i use “Global” asset to replicate the changes for other 4 robots? how can i do it?
  2. what if 1 robot is down, can i use a “Backup” robot without any process defined to support the process (e,g. orchestrator saved the previous robot process and apply to the new one), how to do it?

Thanks for the help!