To find the relevant fuses, you need to consult your owner's manual. It will have a fuse box diagram showing the layout and what each fuse protects. Look for fuses related to power seats, memory seats (if equipped), or possibly even general power distribution circuits that might feed the seat motors.
You'll likely find fuses in both the underhood fuse box and the interior fuse box (usually located under the dashboard, often near the steering column). Check both locations carefully, referring to the diagrams in your owner's manual.