In "Tasksel" how do I select a package?

I found a video on YouTube that shows someone using the command tasksel from the server's boot menu after a fresh install of Ubuntu Server. Simple enough it looked like, but when I go to the options I want to choose for installation it has no information on how to select them, and when I click Enter on one of them it takes me back to the command prompt.

So how do I make a selection of the items listed under tasksel?

I have tried Shift++ to add, but no luck. Anyone know?

I want to install Ubuntu Desktop, as Ubuntu GNOME GUI is not an option in the listing for Ubuntu 17.10 Server.

Open the terminal and type:

sudo tasksel  

A Package configuration window will open. Select a task by scrolling down or pressing the down arrow key ( ↓ ) and pressing space. This will put an asterisk beside the selected task and mark it for installation. Tasks that are already installed are marked by an asterisk. If you make a mistake, press space again to unselect a selected task. From the Software selection list select a task and use the Tab key to select <Ok> and then press Enter as shown in the below screenshot:

Depending on the size of the group of packages in the selected task, you may need to wait a while for the packages in the selected task to finish installing.

From the tasksel menu, you should be able to mark which packages you want to install by pressing "Space" on each one. Did you try that?