Same time/same place. Participants meet face-to-face in one place at the same time, as in a traditional meeting or decision room. This is still an important way to meet, even when Web-based support is used, because it is sometimes critical for participants to leave the office to eliminate distractions.
Same time/different place. Participants are in different places, but they communicate at the same time.
Different time/same place. People work in shifts. One shift leaves information for the next shift.
Different time/different place. Participants are in different places, and they also sent and receive information at different times. This occurs when team members are traveling, have conflicting schedules, or work in different time zones.