How can a user modify an existing workflow to change the notification frequency?

To modify an existing workflow in Smartsheet to change the notification frequency, the appropriate approach is to adjust the Run workflow setting. This setting specifically controls how often and under what circumstances notifications are sent out, allowing users to tailor the frequency of alerts according to their needs.

By accessing the workflow settings, users can specify the timing and conditions under which notifications are triggered, whether it's immediately after a change or on a scheduled basis, thereby providing flexibility in communication within the team. This capability ensures that team members receive updates in a timely manner without overwhelming them with excessive notifications.

The other options do not directly pertain to modifying notification frequency. Changing the automation type could alter the type of workflow itself but would not specifically address the frequency of notifications. Editing task details relates to the content and attributes of tasks but not to workflow frequency, while changing user permissions pertains to access and control rather than how often notifications are sent. Thus, adjusting the Run workflow setting is the focused and effective way to achieve the desired modification.