I was going to say, "just place it into InDesign" as you can switch off the various layers in there. But: no, that file is not meant to be used in InDesign. That's why you are having problems right from the start!
See the Checklist #1? "Create artwork on the 'Artwork' Layer …" While you *can* create layers in InDesign and name them any way you want, you cannot add anything to an existing layer. A quick view to the PDF properties tells you more: the PDF is created with Illustrator (v.CC 22.1, no less; that sounds it's the latest). I did not try but I bet if you open this in Illustrator, the abbreviated checklist makes much more sense.
You might want to address a complaint to the firm that sent you this template, as I would have expected at least some instruction. Even a basic "Oh and it's for Illustrator" would have helped greatly. Keep in mind they have other customers as well. Some may already know what to expect, some can work it out by themselves, and some have to ask online what to do. Thus, a better set of instructions by them goes a long way.