Yes.
Up to 10 images can be loaded at any one time, preferably no larger than approx 800 x 600 pxl.
Click on 'Upload Image' at bottom right of the thread page, select the required image or images, and click 'Open'. If they are individual images from different folders, do this for each one, allowing the first one to upload as a 'thumbnail' before selecting the next, and so on. If, for example, five images are together or inline, sweep the mouse over then to highlight, and then click the 'Open' button.
When all required images are loaded, if desired you can click on the 'full image' button alongside the first image, and all pics will be displayed in the full size.
Once happy, click on 'Post reply', and the images will be displayed at the bottom of the the of the thread.
Note that it's best to leave a three-line space, after the text, so that the images appear after the text.