In Time management (Settings > Feature Settings > Time Management), you can set rules for hour entries and set default settings, for example.
How to set the description field as mandatory in hour entries
Plans & Permissions
Plans: Free CRM, Sales CRM, Project Management, ERP
Description field of a time entry is text field. where the user can type in details about the work done.
This field is possible to be set as mandatory from Hour Entry Rules & Permissions (Settings > Feature Settings > Time Management). Activate the toggle "Make description field mandatory for hour entries".