public void AddIncome(string incomeItem, decimal incomeValue, string coOwnerName)
        {
            base.AddIncome(incomeItem, incomeValue);
            CoOwner coOwner = _coOwners.Find(x => x.Name == coOwnerName);

            coOwner.AddIncome(incomeItem, incomeValue);
        }
        public void AddExpense(string expenseItem, decimal expenseValue, string coOwnerName)
        {
            base.AddExpense(expenseItem, expenseValue);
            CoOwner coOwner = _coOwners.Find(x => x.Name == coOwnerName);

            coOwner.AddExpense(expenseItem, expenseValue);
        }
        public decimal GetMonthlyIncomeOfCoOwner(string coOwnerName)
        {
            CoOwner coOwner = _coOwners.Find(x => x.Name == coOwnerName);

            return(coOwner.GetMonthlyIncome());
        }