You have the choice of which unit to use issues are being estimated in your plan:
The estimation unit that you choose for your plan impacts the types of teams that you can create in your plan.
- If you're using days or hours (time-based estimation), you can create both Scrum and Kanban teams in your plan.
- For Scrum and Kanban teams, the default capacity is set to 200 weekly hours.
- For Scrum teams, the default iteration length is set to 2 weeks.
- If you're using story points, you can only create Scrum teams in your plan. The default team velocity is set to 30 story points, and the default iteration length is set to 2 weeks.
See Creating teams for more details.