For example, I would like to auto-populate:
- Decision Timeframe = Immediate
- Decision Maker = Yes (checkbox)
- Has Budget = Yes (checkbox)
- Lead Priority = High Priority
- Lead Queality = 5 stars.
Default field settings are available on one of the screens that appears when you are creating a field, to add them for existing fields use the Edit link next to the field name on the object's field settings screen.