You will be asked to set up an remote access control password and to enter it a second time, as verification. When the software has downloaded and installed, it’s ready to run: The Raspberry Pi Foundation recommends a specific VNC server, tightvncserver, written by TightVNC Software. The client relays your mouse and keyboard input back to the remote computer. You need a suitable server running on the machine that will be sharing its desktop, and a client app to present that desktop on the computer you’re accessing the remote machine from. VNC is a standard, widely supported way of securely presenting a GUI remotely over a network connection. It turns out that you can, using VNC (Virtual Network Computing). My Pi Zero’s desktop within my Mac desktop