You don't always have time to place an item on a drawing when you're working in the field, or at your computer. You can always place the item on your drawing at any point later on. This means you can also create items without placing them on a drawing, you can read more about that here.
To place an item, do the following:
Open the CHECKD Field app, and then the project.
Find the item you want to place
When you have opened the item, click the menu button located in the top right corner (marked by three dots)
Choose "place item on drawing"
Pick drawing you want to place item on
Zoom in and find the area you want to place the item. Hold your finger on the drawing for halv a second, and then drag your finger to the desired location. The second you lift your finger, the item is placed
