I think you click on "commemorate someone you know" and fill in their name , but I found its better just to put the surname and not the forename as well, even if you know it, as sometimes they are registered in just an initial or initial and the computer won't recognise the full name, it will then search the database, which is from the Commonwealth War Graves commission , and you can hopefully then pick out your family member, it took me several attempts to find my Great Uncle, but I did find him and it had details of his parents, their address, his date of death and so on. Very moving. I managed to post some photos I have as well. Its not a very user friendly site, but I did manage to negotiate it.