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

「メニューバー」から

Choose Format - Align Text - Centered.

From the tabbed interface:

Choose

「サイドバー」から

Select Properties - deck.

「ツールバー」から

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.