Somebody help me. I have a charging management software, and I need two computers, one downstairs and one upstairs, and then both computers use this software at the same time.

You use one as the server, install the software server and database on the computer as the server, install the client on the other, and set the port, login account, password and so on. , you can use it through network access. If there is no network, buy a switch to connect two computers. As for the data, it is stored in the database of the server, and your client can use it directly after logging in, including real-time modification and change of the data.