On the left-hand menu tab in the main CMS click into 'Gallery' to access and upload images to your media library.
Click '+ Upload New Image' button on the top right-hand corner to add images.
Click on 'Choose File' to select images for upload, PNG or JPG format only.
Press 'Save' to publish.
To delete, return to the 'Gallery' dashboard, locate the image you wish to delete. Under the 'Action' column, click 'Delete'.