DN: Is it allowed to use the Research, Training and Networking contribution to cover the travel costs of a supervisor-to-be to go to the central interiewing session?

Yes, it is possible. Research, Training and Networking costs can be spent for anything related to the Doctoral Network project. Travel costs of the supervisors are always paid via the institutional unit costs, be it Research, Training and Networking contribution or Management and Indirect contributions.

PF: For a proposal in social sciences where the methodology includes conducting interviews, can incentives be paid to interviewees from the Research, Training and Networking contributions?

Any reasonable project-related costs are eligible. Moreover, incentives are a usual practice in social sciences.

DN/ PF: Can RTN costs be used to purchase a new computer for an MSCA fellow?

The purchase of a laptop is one of the most common expense items encountered in RTN.