To set the grid previews in Capture Time order, go to the toolbar at the bottom of the screen, just above the filmstrip, and set the menu to Capture Time by clicking on the up/down arrows to the right of the Sort menu. If you do not see this toolbar, tap the letter T on your keyboard to toggle it on.
a setting where when Lightroom is open it auto imports images from an SD card into previews when an SD card in inserted?
To understand better- It only automatically 'Opens' the Import dialog showing the photos to be imported.
Currently I need to click on "import" before it imports into previews.
And that is correct as it has always been. You then have the options of selecting specific images to be imported, and setting the 'Destination' for the import.