See how to create individual stock benchmarks
YourStake recommends that you create a custom benchmark for individual stock portfolios for the best results. You can do this by creating a portfolio to represent your benchmark, and add ETFs that track your desired index(es)
For example, to create a 60/40 ACWI AGG benchmark, you can manually enter 60 dollars in ACWI, and 40 dollars in AGG in the portfolio creation page: https://www.yourstake.org/advisordashboard/model_portfolio_create/
Once you've created a custom benchmark, you can assign it as the default benchmark to your individual stock portfolio.