How do I print in draft mode on Epson Workforce 3540

I just bought and set up an Epson Workforce all in one printer. Everything is working fine, except that I can't get it to print in draft mode.

I've tried a few different applications and all are the same. When I go to print, I get a window that includes a print quality slider at the bottom that includes three settings: draft, normal, and best. The word "draft" is grayed-out. If I try to drag the slider to it, it snaps back to normal in the middle.

I looked in the printer's manual, and it says draft mode can only be selected with "plain paper" selected. But, even when I have plain paper selected, I cannot choose draft quality. In fact, it seems no matter what I try I cannot choose draft quality.

The printer's owner's manual, it also shows some printer dialog windows that I don't get (I think I did get them with the Epson I just replaced, though).

Can anyone tell me how I can select draft print quality, and why I'm having so many problems doing so? Maybe it's to be expected that the Epson isn't letting me select the print mode quality that would save me the most ink.

I'm attaching a screen capture of what I see when I try to print. It is the first image.

I'm also attaching a couple of screen captures from the printer's owner's manual section on Mac printing. These are the printer dialog windows I don't see when I try to print.

What I see when I try to print (note that "Draft" is grayed-out on the quality slider):

These are what the printer's manual seems to suggest I should see (and what I think I did see with my last Epson printer that I just replaced):

And: