Visual control of remote desktop via VNC Connect.
Just run the installer on the device you want to control from and follow the instructions, or there’s MSIs for remote deployment under Windows. If you don’t have permission to install VNC Viewer on desktop platforms, choose the standalone option.
If you have a keyboard and mouse in front of you, use them as you would normally. If you’re on a mobile device, then your touchscreen acts as a mouse trackpad, with gestures mapped to mouse buttons. See the on-board help!
VNC Viewer is always free to use. Just accept the EULA the first time you run.