This chart shows a control center of a production process that allows to assign tasks to resources. You can assign tasks to machines of a certain group or remove them from groups, and you can move tasks on the time axis and between machines. To assign a task to a machine, click onto the task in the lower area and select a group and a machine from the select box. After pressing the "Assign" button, the task will move from the hold line at the bottom to the Gantt diagram above and will adopt the color that all tasks of the line have. To remove a task from a group, click onto the task in the upper section of the Gantt diagram and click on the button "Remove Assignment". The task will move to the hold line. You can move a task along time or between machines just by drag & drop. The red bars indicate overlapping tasks. Clicking on one of the four buttons at the top left corner of the diagram will change its size.