PAY ATTENTION! You can find the portal, where you can register your study for assessment, under 'registration of studies'. However, until 1 July 2019 this will lead you to the portal of the ETCL. From July 1st all Humanities affiliated researchers can register their study for assessment.
The Faculty Ethics assessment Committee Humanities (FEtC-H) monitors the integrity of empirical research involving human subjects conducted at the Faculty of Humanities by assessing in advance any planned study with participants on criteria concerning informed consent, acceptable burden and risks to participants, and appropriate data management procedures.
The FEtC-H has a dual structure, look here to get an impression.