Add an image to a plane in a prefab hdrp 2021.2.12

I have a prefab of a building and what I want to do is add a “sign” to the building so the player will know what kind of a place it is. I took my prefab and added a plane to it, but how do I add the image to the plane? I’ve tried setting the image to 2d, to 3d. Apparently you can no longer simply add an image as before in the tiling/offset. I don’t see any place that it can be added, so what am I missing? Please be advised the prefab is a 3d model and the image is a jpg.

First question: How do I prepare the image to make it compatible with a texture.

Second question: How do I then add the image to a new material.

Third question: How do I then add the texture to the plane on the prefab.

The HDRP is all new to me, so walk me through the process please.
Thanks!

I got it working at least on the prefab. For those watching at home this is what I did:

  1. Add a plane to your prefab, then change the size and line it up to where you want it to appear on the building.
  2. Make a new material, name it, make sure your image is set to 2d, then drag it to the small space next to Albedo. I then upped the metallic to full.
  3. Drag the new material to the plane and bingo!

I’ve been looking for a way to add an image to a plane and found this thread first so will add my solution even though it may not entirely match. This worked for me in 3d:

  1. Create a new Material (rightclick in any asset folder).
  2. In it’s dropdown menu, choose Universal Render Pipeline Shader/2D/Sprite Unlit Default.
  3. In the topright corner you see a box to add a Sprite Texture. Lock the Material (top right).
  4. Click and drag the image in your project to that box. Make sure it is converted to 2D/Sprite first if need be (with the top dropdown selection). Unlock the Material.
  5. Now click and drag this Material to your Plane in the Hierarchy. Presto!