we have Perpetual Pro License and please let us know the capabilities with this license and let us know how to do the multicast

We have Perpetual Pro License and the Wowza Streaming Engine Version is 4.4.1 (build 17882).

Please let us the capabilities of this license and let us know how to do multicast with this server to all Windows desktops in the organization.

Hello,

The Perpetual Pro license includes advanced features such as Transcoding, nDVR, and HTTP Origin.

Multicast is also supported with the Perpetual Pro License and to push multicast mpeg-ts out to your LAN you would want to look into Stream Targets for this feature. The following article shows how to configure Wowza Streaming Engine to push this multicast output.

Sample Map File Entries For Stream Target Destinations MPEG-TS

Best regards,
Andrew