"Media Manager" is a built in tool that allows to manage images. You can add/delete them using it.

 1. You can open "Media Manager", by selecting "Site" in the top left corner and then selecting "Media Manager"

2. Usually all the images are located in the "Stories" folder. So click on "stories" to open the folder.

3. Optionally you can create a new folder so it would be easier to find the pictures you need in one place. Type in a name for a folder and press "Create Folder" button. The folder should appear below, next to other folders and images.

4. Optionally open the folder you have created or go to the bottom of the page, where it says "Upload File". Press "Browse" and select the image from your computer. Once the image is selected press "Start upload" and the image you have selected will be uploaded, so you could use it.

You can upload as many images as you want.

To delete an image, press the red cross below the image.

To delete multiple images, select all of them and press the "Delete" button in the top right corner.