Log in to Chute and access the relevant campaign.
Click the Pages tab.
Select the page you want to update.
Click the Assets tab and click the album icon. (Second icon from the left)
Select the album from the list of populated albums.
NOTE: If the Album you selected is a parent album that has a child album within it, you need to select the child album to access the images.
Choose the image you want to use and add it to your page by using the drag and drop method.
You can view the changes made on the page by selecting Preview from the dropdown menu, as shown in the image below: