If your league performs a "Slow Draft", whereby picks take course over a series of days or longer, FanDraft can definitely support this case.
While you can't turn the draft clock off, you customize the settings so that nothing happens when the clock hits zero:
- Select "SETTINGS" from your league's menu tab.
- Scroll down to the setting titled "When Clock Hits Zero"
- If it isn't already selected, choose "Nothing Happens"
- Click the "Save League Settings" button.