Final answer:
When the Match All field on a User Criteria record is checked, a user must satisfy all the selected criteria to be considered a match. Failing to meet just one criterion disqualifies the user from meeting the conditions.
Step-by-step explanation:
If the Match All field is checked on a User Criteria record, the user must satisfy all of the selected criteria to meet the conditions. This means that every condition outlined in the User Criteria must be met for the user to be considered a match. If even one of the criteria is not met, then the user will not meet the overall User Criteria requirements.