Do I have to install the program on my server or host computer?

Does Sage 50 have to be installed on the computer where the data will be read from?

Yes, at a minimum, the Sage 50 database connection manager must be installed on any computer that hosts data for other computers to read.

Please follow the Related Resource: How to install the Sage 50 Connection Manager on the server for how to install only the connection manager on the server.
If you want to install the Full Version on server, instead, then follow the Related Resource: How do I install Sage 50 Accounting? which includes the connection manager.