The Group Management Board is responsible for the implementation of the company strategy, overall management of the business and all operational decisions. The Group Management Board is responsible for the implementation of the company strategy, overall management of the business and all operational decisions. The Group Management Board is responsible for the implementation of the company strategy, overall management of the business and all operational decisions. The Group Management Board is responsible for the implementation of the company strategy, overall management of the business and all operational decisions. The Group Management Board is responsible for the implementation of the company strategy, overall management of the business and all operational decisions.