Selection includes new projects from prize winning directors Martika Ramirez Escobar, Leonardo Martinelli and Le Bao.
Fund supports filmmakers from countries where funding and infrastructure is lacking or restrictive.
Locarno, Thessaloniki, Tallinn, IFFR and Karlovy Vary are collaborating on the initiative.
The projects, all feature debuts aside from one, will receive €60,000 to support either their production or their post-production.
Stewart will work alongside festival director Vanja Kaludjercic.
The European industry has created support initiatives, including for funding, co-production and raising awareness.