Decision making requires teamwork; determine who needs to participate and get their commitment to participate. If one or more distant team members are to participate, select times for conference calls that are acceptable to them.
Get agreement from participants on the decision process you will use.
Objective decisions require defined criteria, such as cost, time, usefulness, completeness, or feasibility. Seek criteria that relate to your defined goal, and make them measurable. Prioritize the criteria by relative importance. Also identify any constraints such as time, resources, or required approvals.