Proposals for experiments are made at CERN and have to go through the correct channels in order to be approved.
One of the last steps in the process is to submit the proposal to an appropriate CERN Scientific Committee.
[1] In 1960, John Adams, the Director General, created three committees to manage experiments for each bubble chamber experimental technique used at CERN.
[3] At the end of the bubble chamber period, the system was again changed and based on machine, rather than experimental technique.
[4][1][5] Since then, the committees have changed based on the creation and decommissioning of facilities and accelerators.