Here are the steps to anchor a 2D asset to a position on the screen:
1. Create a Screen Image.
2. Select which edge you want to pin the image to on the Screen Image's Screen Transform component in the Inspector panel. You can select multiple edges.
3. Utilize Fix Size to ensure when the screen resolution changes, the image size stays the same.
Keep in mind when you create a screen image it will be set as a child of the object called Frame Region. By selecting the Screen Region Object you can specify where you want your object to get placed using the Screen Region component.