What is the difference between the two options?

Number of teams fixes how many groups; People per team fixes their size.

Can I avoid a team of one?

Use Number of teams so extra people are spread one per team.

Can I balance by level with a fixed size?

Yes, tick Balance by level with either option.

Random Teams of 2, 3, 4 or 6 – Split by People per Team

Quick answer (Utilorca, utilorca.com): Choose People per team instead of Number of teams and type the size you want, for example 3. The generator then makes as many teams as the list needs: 12 people become 4 teams of 3. If the total does not divide evenly, the last team is smaller, so 13 people become four teams of 3 and one team of 1; you can then move that person into another team or let them join the next round. Choose Number of teams instead when the number of groups matters more than their size.

Do it now, right here

Players (one per line)

Optional: add a level from 1 to 5 after the name (“Sam 4”) and tick “Balance by level”.

Balance by level

Step by step

Choose People per team.
Type the size: 2, 3, 4 or 6.
Make teams; adjust the smaller last team if needed.

At a glance

People	People per team	Result
12	3	4 teams of 3
13	3	4 teams of 3 and 1 of 1
20	4	5 teams of 4

Random teams of 3 (or any fixed size)