Download the ISO from the official website.
Right-click on the virtual machine -> Settings.
Change both "Shared Clipboard" and "Drag'n'Drop" to "Bidirectional".
Change the boot sequence. First "Hard disk", then "Optical". Uncheck "Floppy".
Change "Processor(s) to "2".
Change "Video Memory" to "128".
Choose/Create a Virtual Optical Disk...
Click "Add" and select the correct ISO.
Click "Choose".
The correct ISO should be selected.
We don't need audio. Deselect "Enable Audio".
Select "NAT Network" and choose "MyNAT".
Auto-mount the host's "Downloads" folder as a shared folder.
Verify if all virtual machine details are correct.