Can Sub-users be given 'Control' or 'Configure' privileges to multiple buildings, floors, and zones?

Yes.

Sub-users can be set with 'Control' privilege to some buildings and 'Configure' privilege to others at the same time.  Learn more

You can also visit the following sections for more information:
To configure Building Management, click here
To know pre-commissioning details, click here
To know how to Commission & Configure Control Devices, click here