3.
Once a Botkube command is executed, it will be handled on target Kubernetes cluster specified with --cluster-name flag. However, this is an optional flag, where if you have not specified it, Botkube Cloud will select the first instance. However, you can also achieve setting default instance with command @Botkube cloud set default-instance {instance-id}.
After this point, all of your commands will be executed on the default instance. Moreover, if you want to execute a command on all the target clusters, you can use --all-clusters flag.