# Levels

- [Manage Levels](/user-guide/2d-building/building/levels/manage-levels.md)
- [Daylight Grids](/user-guide/2d-building/building/levels/daylight-grids.md)
- [Roof Geometry](/user-guide/2d-building/building/levels/roof-geometry.md): Roofs can be complex to model, but this section covers everything you need to know to add and customise roof geometry with confidence.
- [Create a Roof](/user-guide/2d-building/building/levels/roof-geometry/create-a-roof.md)
- [Add Roof Windows](/user-guide/2d-building/building/levels/roof-geometry/add-roof-windows.md)
- [Add Custom Eaves](/user-guide/2d-building/building/levels/roof-geometry/add-custom-eaves.md)
- [Add Skylights](/user-guide/2d-building/building/levels/roof-geometry/add-skylights.md)
- [Specify a Skylight](/user-guide/2d-building/building/levels/roof-geometry/specify-a-skylight.md)
- [Calibrate Underlay](/user-guide/2d-building/building/levels/roof-geometry/calibrate-underlay.md)
- [Shading](/user-guide/2d-building/building/levels/shading.md)