When you first open ShowCenter, you will be prompted to connect to ContentHub. To do this, you will need to enter your ContentHub's Base URL. The base URL is the address of your ContentHub server, and it should look something like this:
https://example.presentmore.com/
Next, you will be prompted to authorize the connection. You can either click the authorization URL or scan the QR code with your mobile device.
If you use the same PCs for multiple conferences, you may need to log out of one ContentHub and log into another. To do this, click the "gear" icon at the bottom right of ShowCenter. Then, click "Log Out".