If you want to stick to more traditional indexing approaches, that’s supported. For example, one user has stayed very close to VTI, but made some modifications to customize VTI to her goals and existing portfolio (https://enombic.com/abby/VTI-15).
We also have some users who want an easier way to automate their investments into a classic Vanguard basket (https://enombic.com/aml/lazy).
Everything on the app is DIY. So, alternatively, if you want to be more active, and test a thesis you may have, that’s supported as well.