Close the template before “local” merging:
We’ve found that leaving the template open in PowerPoint during a “local” merge operation can sometimes produce unusual results in the output file. The problem is not as prevalent in using PowerPoint 2010, but never-the-less, we recommend closing the template before merging.
Images in table cells:
PowerPoint tables won’t accept an image in-line with text, however, Conga can insert an image as a cell background.
Text Boxes and Shapes
SmartArt not supported:
SmartArt (PowerPoint’s tool to create org charts and process flows) isn’t currently available in a programmatic fashion.
Merging data with new line characters:
When merging data that contains new line characters, we recommend using a single font for the entire text box or shape.
If statements can only be used in Microsoft Word templates; Powerpoint does not have this capability. The only way to work around this limitation is to create an IF formula field in Salesforce.