As a Manager do U take decisions in one moment or as a process ?

As a manager, you are faced with decisions every day. Some decisions are straightforward, such as deciding which team member to assign to a specific project. Others are more complex, such as selecting a new vendor or 

deciding to discontinue a product due to weak sales

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Many managers tend to view decision making as an event—a choice to be made at a single point in time, usually by an individual or a small group. In reality, however, significant decisions are seldom made in the moment by one manager or in one meeting. Important decisions, such as changing the strategic direction of a group or hiring a new manager, typically require time and input from many individuals and sources of information throughout an organization. 

Hence, decision making can more accurately be viewed as a process.

Managers who recognize decision making as a process increase their likelihood of making more effective decisions. Why? Because by taking time they are able to identify and assess the issues associated with making the decision. By involving others, they weigh different perspectives and deepen the discussion. Perhaps most important, taking a process-driven approach is more likely to lead to broader acceptance of the decision—and to more effective implementation.