A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Hello,
Thanks for choosing Microsoft Community.
Unfortunately there is no multi-level list option available in PowerPoint 2010.
If you think this feature is important and want Microsoft to include this in the future versions of the software, provide your feedback in the link below:
http://mymfe.microsoft.com/Office/feedback.aspx?formID=375
As a workaround you may insert Word as an object and create multi-level numbered list and see if it helps.
1) Open PowerPoint, click on Insert, Object, select Microsoft Word Document and click on OK.
2) Create the m ulti-level list and click outside Word window, re-size it move it to the desired place.
Hope the above information helps. Reply for further assistance.
Thank You.