Mandatory timesheet comments
Comments on time entries can be useful for managers (and even clients) however they might not always be necessary, and Projectworks lets you specify whether they are mandatory or not.
Timecode setting
Each timecode has a setting (part of the main flow when creating a timecode, or under “Settings” for existing timecodes) that can be checked / unchecked depending on whether you want to enforce comments on time entries against this timecode.
System-wide default
Your Projectworks administrator can set comments to be mandatory by default in Settings > System > Settings > Always default comments to be mandatory for new timecodes.
Note, this can be overridden on an individual timecode.