How to: Apply/reapply slide layout.
Solution:
Select the 'Format' menu and select 'Slide Layout...'.
1) In 'Slide' view, select the 'Format' menu and select 'Slide Layout...'. (The Slide Layout dialog box appears.)
2) Select the desired layout from the 'Reapply the current master styles' or 'Change the layout of the slide to' group. (When a layout is selected, a description appears in the lower right-hand corner of the 'Slide Layout' dialog box.)
NOTE: When the same layout as the current slide is selected, the group name is 'Reapply the current master styles', and the button name is 'Reapply'. When a different layout is selected, the group name is 'Change the layout of the slide to', and the button name is 'Apply'.
Current slide layout
Different layout
3) Click 'Reapply' or 'Apply'.
NOTE: To close the dialog box without accepting changes, click 'Cancel'.