中央揃え (垂直)

Vertically centers the selected objects. If only one object is selected in Draw or Impress, the center of the object is aligned to the vertical center of the page.

このコマンドの見つけ方

From the menu bar:

Choose Format - Align Text - Centered.

From the tabbed interface:

Choose

From the sidebar:

Select Properties - deck.

From toolbars:

中央揃え（左右）

To align the individual objects in a group, to enter the group, select the objects, right-click, and then choose an alignment option.