How a check works
One person creates the room and shares the link. Everyone opens it, types a name and answers the question on a 1 to 5 scale. Until someone hits Reveal, the room shows only who has answered, never what they answered, so the first person to speak does not set the tone for everyone else. The reveal shows the spread, the average and, on a named round, who sat where.
Keep it to one question and a couple of minutes. The number is a prompt for a conversation, not the conversation itself. A 3.8 with two people at 1 is a very different week from a flat row of 4s, which is why the distribution is the part worth looking at.