Explanation
Arranging multiple sessions with small groups of employees is an efficient approach to conduct discovery meetings, as it allows the consultant to interact with different types of users and gather more detailed and specific feedback from them. Sending a survey to all employees asking for a list of desired changes is another efficient approach, as it enables the consultant to collect quantitative and qualitative data from a large number of users in a short time. Asking management to select which employees should participate in sessions is also an efficient approach, as it ensures that the consultant meets with the key stakeholders and representatives of each business unit or function.

Setting obtainable metrics, goals, and milestones for the deadline is the best way to meet the requirement of tracking accounts, contacts, and opportunities before the global conference in 4 months.
Metrics are measures of performance or progress that can be quantified and tracked. Goals are desired outcomes or results that can be achieved by following a plan or strategy. Milestones are significant events or stages that mark the completion of a part of a project or a goal. By setting obtainable metrics, goals, and milestones for the deadline, the consultant can ensure that the Sales Cloud implementation is realistic, manageable, and aligned with the client's expectations and needs.