Subheadings(Top-of_page) in REUSE_ALV_GRID_DISPLAY

Hi,

how to give the subheading(Top-of_page) in alv using REUSE_ALV_GRID_DISPLAY.

Example like

*********average of material**************.(main heading)

average of average of average of ***********(Subheadings)

3 months 6 months 12 months

Regards,

Suresh.