# Assigning Programs

A walkthrough on how to assign programs to your Dragonfly models using the library of programs that ships with Ladybug Tools.

Programs (aka. Space Types) dictate default schedules for the usage of Rooms along with capacities for occupancy, lighting, equipment, etc. If you haven't already, consider watching a complimentary video from our [Energy](https://app.gitbook.com/o/-LPHXPRWbKlkUWx_vOdK/s/Pq6ENNvCpoA5odnMi32U/ "mention") series: [Assigning Program](https://app.gitbook.com/s/Pq6ENNvCpoA5odnMi32U/assigning-program "mention").

Check out the [introduction](https://docs.ladybug.tools/ladybug-tools-academy/urban-energy-with-dragonfly/introduction "mention") page to find sample files used in this video.

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