A Cairo misdemeanor court adjourned to 1 February the trial of Amr Ali, the coordinator of 6 of April Youth Movement, and three others on charges of calling for a general strike.
The defendants, who were referred to the court by the North Cairo prosecution on Tuesday, also face charges for the possession of anti-regime publications.
Amr Ali was arrested in September.
In December, police arrested four other leading figures in the political office of the 6 of April for inciting violence and protests on the fifth anniversary of the January 2011 revolution.
Amr Ali was elected as the 6 of April coordinator in October 2013, succeeding its founder and long-time coordinator Ahmed Maher, who is currently serving a three-year jail term on charges of illegal protesting.
The group was founded in 2008 to support protesting workers in the Nile Delta's Mahalla. It quickly developed into one of the leading opposition movements during the Mubarak era. After the ousting of president Hosni Mubarak in February 2011, the movement continued to play a role in the political scene.
It was banned in an administrative court ruling in April 2014.