1. Sign in to Microsoft Flow, and then select My flows in the top navigation bar.

    My flows option

  2. Select Create from blank.

    Create a flow from blank

  3. In the Search all connectors and triggers box, type Recurrence, and then select Schedule - Recurrence.

    Find recurrence trigger

  4. In the Recurrence dialog box, specify how often you want the flow to run.

    For example, specify 2 under Interval and Week under Frequency if you want the flow to run every two weeks.

    Specify recurrence

Source: Microsoft