Yes, FanDraft DOES fully support the use of "Individual Defensive Players" (IDPs)!
If you use utilize IDP by toggling the "Use" position to on in "Settings > Roster Positions".
You can access individual IDP positions by doing the following:
- Click on "Settings" in the header menu.
- Scroll down to the "Roster Positions" area.
- Click on the "Toggle More Positions" link.
You can then click the "Use" toggle on any position you would like to use.