As a charity you may want to change the image that appears at the top of the tab when a donor visits the site as well as when I respond as an admin to my supporter's comments.
This can be done by accessing the following link and uploading a favicon
You may also want to update (add for the first time) the image which is displayed when as a charity you reply to a supporter's comment. This can be updated where you see charity log. Please fill out all the sections (even the section which acts for a description). At this stage, it does not populate anywhere else (still to come!), so you can type in anything and it will be ok.