A "consultative body" is a group or committee formed to provide advice and suggestions. Its purpose is to discuss and consult on particular matters or issues before making decisions or taking actions. Full definition
Supporting a streamlined method for expanding the PBS listing for Aboriginal and Torres Strait Islander people, for example through a national consultative body (naccho.org.au)
On Friday, King Abdullah appointed 30 women to the Shura Council, giving them a fifth of the seats in the consultative body — a move he promised to make in 2011. (religion.blogs.cnn.com)
The most substantial piece of evidence presented for this case would seem to be Pope Francis's setting up of a consultative body of eight cardinals to oversee the revision of Pastor Bonus, that is, the Apostolic Constitution on the Roman Curia. (faith.org.uk)