static void RegisterMember()
        {
            // display that is shown when a staff member chooses to register a new member
            // allows user input for first name, last name, address, phone number
            // user input is used in Member constructor to create a new Member instance
            // if input is valid, the new movie will be added to the member array and confirmation message will be printed

            Console.Clear();
            Console.WriteLine("3. Register a new member"); // heading
            Console.WriteLine("");

            // -- entering member details -- //
            // insert first name
            Console.Write("First name: ");
            string fname = Console.ReadLine().ToString();

            // insert last name
            Console.Write("Last name: ");
            string lname = Console.ReadLine().ToString();

            // insert address
            Console.Write("Address: ");
            string addr = Console.ReadLine().ToString();

            // insert phone number
            Console.Write("Phone number: ");
            string num = Console.ReadLine().ToString();

            // use all user input to create a Member instance
            Member addedMember = new Member(fname, lname, addr, num);

            // add member to array
            bool addStatus = MemberCollection.AddMemberToArray(addedMember, members);

            // if the member was successfully added to the array
            // note that the error message is built into the AddMemberToArray() function in this case
            if (addStatus)
            {
                Console.WriteLine();
                Console.WriteLine("Member registration successful.");
                Console.WriteLine("The member's username is " + lname + fname + ".");
                Console.WriteLine("The member will be prompted to choose a 4-digit password when first logging in.");
                Console.WriteLine();
            }

            Console.WriteLine("Press any key to return to the staff menu.");
            Console.ReadKey();
        }
        static void CreateDummyUsers()
        {
            // creating dummy users to help with testing and showing implementations

            Member member1 = new Member("Bec", "McMahon", "34 Fairfield Avenue, Norman Gardens", "0447635285");

            member1.Password = "******";
            MemberCollection.AddMemberToArray(member1, members);

            Member member2 = new Member("Sam", "Olive", "3 Treseder Street, The Range", "0466659547");

            member2.Password = "******";
            MemberCollection.AddMemberToArray(member2, members);

            Member member3 = new Member("Natalie", "Robina", "7 Flanagan Street, Frenchville", "0422433309");

            member3.Password = "******";
            MemberCollection.AddMemberToArray(member3, members);
        }