Groups and Group dynamics

1) If groups are to create positive synergy in the accomplishment of organisational tasks, what must managers do to overcome disruptive behaviours? 

2) Your product marking group consists of ten people who must work together to find the best ways to market your organisation's products. The group comprises of seven women (aged 52,47,33,28,26,24 and 21) and three males (39,33 and 29). Two of the group members were born and raised in different countries (the 33 yo woman is from Lebanon). The 29 yo man has a vision impairment. What aspects of group membership might have an impact on the likely effectiveness of the group?

3) Julia is managing a completely new group of five people, comprising two women and three men (not including Julia). The group is responsible for developing new and innovative work processes in the organisation to enhance the efficiency of operations. They have a year to introduce a series of key changes. Julia and two of the people in the group are completely new to the organisation but have strong backgrounds in change management, while the other three group members were already in the organisation and its current processes. How is the group likely to develop and what problems might eventuate?