Assign to Workstation Button : This button will be enabled, if an operation and a compatible workstation are selected. This will assign the selected operation to the chosen workstation.

Unassign from Workstation Button : This button will be enabled, if an operation assigned on a workstation is selected. Clicking on it will unassign this operation.

Unassign Full Workstation Button : This button is enabled if a workstation is selected. Clicking on it will unassign all operations on the selected workstation.

Search Button : This button will show the find operation dialog box. (More)

Undo Button : This button will undo the last action done. There are multiple level of undos. If you leave the arrow pointer on the button, a hint containing the next undo message will pop up.

Add Button : This button will add a workstation at the end of the line.

Insert Button : This button will insert a workstation in front of the selected one.

Del Button : This button will delete the selected workstation.

Edit Link Button : This button will pop up the link dialog.

Cycle Time Button : This button will pop up the cycle time edition dialog.

Optimize Button : This button will pop up the automatic balancing dialog.

Variant Button : This button will switch the precedence graph into the variant mode. (to learn more about the variant navigator click here)