how to set up Absence type grouping to determine daily WS variants

"This grouping is used to determine daily work schedule variants.

In the view Daily Work Schedule Rules for Absence Recording (V_550X_B), you can specify that certain daily work schedule variants are selected for absence counting on the basis of the grouping."

But in the view V_550X_B,I didn't find the grouping field.

how to set up the Absence type grouping ?

regards