Trinamool Congress (TMC) scrapped all party posts except that of chairperson and, instead, set up a 20-member national working committee with Mamata Banerjee as its head in the wake of a raging debate on the one-person-one-post issue. Seven party seniors - Firhad Hakim, Subrata Bakshi, Abhishek Banerjee, Partha Chatterjee, Sudip Bandyopadhyay, Aroop Biswas and Chandrima Bhattacharya - attended a 50-minute meeting with the West Bengal CM at her residence and trooped out after signing a statement entrusting her to choose office-bearers of the party. Party seniors later said the CM had issued a strong message during the meeting underscoring the importance of unity and intra-party discipline. The meeting was preceded by a nearly two-hour meeting between Mamata and Abhishek, TMC leaders said.