When multiple team members are working on a related feature , how often should they integrate the work?

When multiple team members are working on a related feature , how often should they integrate the work?

1. Do the integration midway through the iteration.

2. After they reach a logical end of creating the functionality.

3. In a scheduled daily (or multiple times in a day) frequency.

4. In a scheduled weekly (or multiple times in a week) frequency.

ans – 2