Restructure Schedules on Layout.

If the option to restructure the schedule on layout is not coming in the pet palette than make sure the drawing frame settings are correct.

In the frame section of drawing settings, if the option to “crop drawing to frame” is checked than the pet palette wont show the option to restructure the table.

Make sure that either this option is unchecked or you are going with the “fit frame to drawing” option

Details of this feature are mentioned in the below link:

https://help.graphisoft.com/AC/24/INT/_AC24_Help/050_ViewsVB/050_ViewsVB-102.htm