1) Publish > Charts > Relationship Chart (an ancestor to descendant chart will simply fill in one side of this report, leaving the other side empty)
2) Publish > Relationship Reports > Outline Descendant Report. Select your ancestor from the person index. Select your descendant from a picklist in the right panel.
If you are related to a person in more than one way, you can access No 1 above through the Relationship Calculator and pick one at Main Menu > Tools > Relationship Calculator - click on the Relationship Chart button in the lower left.
You can include spouses in No 2 above (the ODR). FTM has never included children/siblings in these type reports. Not that it wouldn't be a good option to have.
Another option I would like is to have the direct ancestor to descendant option for the Descendant Genealogy (Register) Report.