Microsoft BitLocker Encryption Central Management Solution.

Or, How to manage Microsoft BitLocker centrally?
Or, Central management and administration of Microsoft BitLocker Encryption solution.

Description: 
Yes, MS BitLocker can be managed centrally. Just you need to have a separate server for this and Install MBAM (Microsoft BitLocker Administration and Monitoring ).

Microsoft BitLocker Administration and Monitoring provides your feasibility to manage your BitLocker infrastructure centrally.

What is MBAM (Microsoft BitLocker Administration and Monitoring)? Please go through the below Microsoft KB to understand and know more about Microsoft BitLocker Administration and Monitoring .

Microsoft KB Reference: https://technet.microsoft.com/en-us/itpro/mdop/mbam-v25/index

Windows 7 Supports BitLocker Encryption?

Or, Does BitLocker work on Windows 7?

Or, How to use BitLocker on Windows 7 professional?

Or, BitLocker Drive Encryption option not found in Windows 7 Professional OS.

Descriptions:

BitLocker is not supported on Windows 7 Professional Operating System. To use BitLocker encryption, you must be using Windows 7 Ultimate or Windows 7 Enterprise.

You may refer below KB of Microsoft to know more about about BitLocker compatibility and configurations prerequisites.

https://technet.microsoft.com/en-us/library/dd835565(v=ws.10).aspx