decorative stickers (different stickers in a common theme for five groups, such as lions, monkeys, tigers, giraffes, and elephants), and a number (1 through 6 for six groups).
Randomly place a number, a colored dot, and a sticker on a card for each participant and include the card in the participant’s materials. When you are ready to form your groups, identify which code you are using and direct the participants to join their groups in a designated place.
Participants will be able to move quickly to their groups, saving time and eliminating confusion.
You may want to post signs indicating group meeting areas to make the process even more efficient.