Model takeoff involves:

1. Opening the Model Takeoff window:

• On the ribbon, from the Takeoff group on the Takeoff tab, click Model.
• If you are using classic view, click Takeoff > Model Takeoff.

2. Double-clicking the model you want to take off.
3. Completing an interview by answering questions, verifying default values, and entering missing values.
4. Sending the model to the spreadsheet.

Here some links to Knowledgebase Articles that can help you gain a better understanding of Model Takeoff:

How do I perform model takeoff? (SQL)

How do I modify a model after takeoff? (SQL)

Working with items and assemblies in a model? (SQL)