Trouble setting up flag ( getopt) for my script

Shell Programming and Scripting
1 
do
    case $option in
        d ) CHEC=true;;
        # more option processing can go here
        \? ) echo "Unknown option: -$OPTARG"
        :  ) echo "Missing option argument for -$OPTARG";;
        *  ) echo "Unimplimented option: -$OPTARG";;
    esac
done
shift $(($OPTIND - 1))
2

Summary says, "Trouble setting up". What have you tried and where are you stuck?
If you're looking for tutorials on getopts, there're plenty of posts available right in this forum.

3

added to my question