> ## Documentation Index > Fetch the complete documentation index at: https://docs.tilt.now/llms.txt > Use this file to discover all available pages before exploring further. # Build a model portfolio > Define a reusable sleeve allocation, review implementation choices, and assign it to a client account. Build a model portfolio when several accounts should share a target allocation. This example uses the synthetic **Aggressive Portfolio** assigned to Taylor Morgan's demo account. Decide the sleeves and weights before saving them. ## 1. Describe the model Ask Tilt Agent: **"Help me define an Aggressive Portfolio with 32.5% U.S., 25% international, 17.5% emerging, 12.5% Canadian, and 12.5% global equity sleeves. Show the full allocation before saving it."** Review the proposed structure. Sleeve weights should express the allocation you intend. A sleeve can contain child sleeves; a child's weight is relative to its parent. Ask Tilt Agent to show the full path and the weight at each level when a model has nested sleeves. Tilt Agent's Configuration Layers table shows Aggressive Portfolio and its five sleeve target weights, with Portfolio as their source. Tell Tilt Agent what to change in the proposed weights or sleeve membership. Confirm the complete structure when it matches your intended model, then ask to see the saved sleeve tree. This readback is the check that the model contains the weights and building blocks you approved. ## 2. Review implementation choices Ask: **"Show me how the U.S. Equities sleeve is implemented and which alternatives are configured."** A sleeve can use a Tilt, published Tilt index, standard index, ETF, or security. The sleeve's target exposure and its implementation are related decisions: an alternative ETF, direct indexing choice, or substitution setting changes how the account may reach that exposure. If you want an implementation change, name the sleeve and the exact choice. Review the current setting, the proposed replacement, and which portfolios and accounts would inherit a change to a shared sleeve. Confirm only after the affected scope matches your intent. Ask Tilt Agent to read the saved setting back afterward. ## 3. Assign the model to an account Ask: **"Show Taylor Morgan's account, its current portfolio assignment, and what would change if I assigned Aggressive Portfolio. Do not save it yet."** Check that Tilt Agent has the intended client and account. Review the proposed assignment and the account's effective allocation before confirming it. After confirmation, ask: **"Show Taylor Morgan's saved portfolio assignment and effective sleeve weights."** Check the account identity, assigned portfolio, and sleeve targets in Tilt Agent's saved readback. The assigned portfolio supplies allocation membership and weights. Account-level settings can tailor implementation without turning the account into a separate copy of the model. You can [tailor the account](/advisor/tailor-account) and then [check readiness and review a rebalance](/advisor/review-rebalance). Saving or assigning a model does not itself submit an optimization or place trades. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.