So, you'll want to create a new master - - go to View > Master and then to
Insert > Duplicate Master. Delete the object on the new master. Go to View >
Side Sorter. Select slides 72-80 and then go to Format > Design Template and
hover your cursor over the new master in the taskpane (probably under "Used in
This Presentation" on the right) and click on the arrow and select "Apply to
selected slides".
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Sonia Coleman
Microsoft PowerPoint MVP Team
Autorun Software, Templates and Tutorials
http://www.soniacoleman.com