Performing actions in CloudPlatform vs XenCenter/XE CLI
It is not advised/recommended to administer a XS cluster that is managed by CCP during normal operations.
There is a requirement though were it may be required to perform some maintenance or similar on XS, like while updating hardware/network or rolling pool upgrade.
In such cases, you should first un-manage the XS cluster from CCP (UI/API) and then perform these activities.
Post completion of these activities the manage the XS cluster from CCP (UI/API). At this time, CCP will sync the latest status of VMs with its database.
I do not believe Dymamic Workload Balancing is supported by CCP 3.x releases. I may be in Campo (4.2), you may double check in the release notes when its available.