Introduce a feature that allows users to create their own customized investment index by allocating specific percentages of their funds to a chosen list of companies (e.g., 50% to CBA, 30% to WBS, 20% to BHP), making them achieve their Target Portfolio. Users can invest in this personalized portfolio on a recurring basis, such as monthly, through a single trade. This approach streamlines the investment process by combining multiple transactions into one, significantly reducing brokerage fees and providing greater flexibility and control over portfolio management.