Hi @TP2B
Are you on the modern layout?
If yes then use the api call only as Environments can be configured only on Classic robots
For you to start on specific id use Strategy as “Specific”
Get the robot id using get robots and get machines doe Machine ID and pass the robot id and Machine id
You can always use this api reference to check
https://docs.uipath.com/orchestrator/v0/reference/api-references
Cheers