Yes! On the Dashboard tab, you can set this number in the Competitors per Judge box.

Example

Say you set this number to 5.

When a judge checks in, RocketJudge will assign him or her 5 Competitors.

If you have no Tags and no Sessions, RocketJudge will assign him/her 5 random Competitors.

If you have added Tags, RocketJudge will give him/her 5 Competitors in that matching Group.

If you have added Schedule Sessions, RocketJudge will give him/her 5 Competitors in that matching Session.

Learn more about auto-assignments here.