A statement from the organisations said that Chris Wade, head of volunteering at Victim Support, and Tessa Willow, chief executive of Volunteer Centre Liverpool, would become trustees of the merged organisation for three-year terms. The move will increase the size of the NCVO board to 14.
Lynne Regan, manager of Volunteer Centre Bexley, will join the NCVO’s nominations committee, which considers nominations for the umbrella body’s board.
The remaining 14 Volunteering England trustees, including its chair, Sukhvinder Kaur-Stubbs, will stand down when the merger takes place.
The organisations said talks, first announced in the summer, were progressing well and they expected to merge "by the start of next year", subject to due diligence.
"Chris, Lynne and Tessa are individually and collectively powerful advocates for volunteering," said Kaur-Stubbs in a statement. "I am confident they will continue to champion volunteering within the merged organisation and give leadership and support to local infrastructure and national development."
Martyn Lewis, chair of the NCVO, said the trio’s experience would be "invaluable as we look to put volunteering at the heart of our work".