I would like to pause a download on steam. I don't wish to delete it, just pause it. When I right click on the game, there is no option "pause downloading". So, how can I pause it without closing steam?
Instead of viewing the games through your "Installed" or "All" games dropdown, select "Downloads" where you can manage all downloads Steam is performing. Here you can pause and resume or reorder any active or pending downloads.
Additionally, launching a Steam game will, by default, pause all current downloads.