Why is the floor or character not showing on a networked client?

Found a workaround on Youtube in the comments section, but how do I make it where I don’t need to Press Shift + F1 and click in Server window then move character then Press Shift + F1 and click back into Client window and Press ` to bring up Command Console and type the command StartFire and press Enter key on the client in order to properly spawn the character as a work around?