Select the Days of the Week for Your Project
Whether you want to display or hide weekends, or your project only runs on Mondays, Wednesdays and Fridays, you can customize the days appearing in gantt view by going to: Menu > Project Settings.
Simply check off the days you wish to appear in your project. Changes will automatically save as they are made. Click anywhere on your project/gantt chart again for the details screen to close.
Note: TeamGantt defines weekends as Saturday and Sunday. If weekends are displayed on your chart they will appear grayed out, but it is still possible to add tasks on these days.