Your chart cupboard: format basic data-driven charts
Doing a little prep work on the front end will help you save time overall, but particularly when deadlines are tight. Our suggestion: import the PowerFrameworks data-driven charts into your presentation template. The charts and associated text will assume your template's defaults. In some ways you want this: color choices, fonts, etc. But in other ways you may not want the defaults to be applied: text sizes, bullets, etc.
Spend some time formatting the newly imported PowerFrameworks data-driven charts to be "native" in your template. That way you'll have a resource for data-driven charts for future presentations that you don't have to "wrangle" when they are imported into your template.
Spend time on this when you have it on the front end to save time on the back end when you may not have it.