Create a time limit for candidates to take Assessments, from beginning to end
You can limit the amount of time that candidates have to complete an Assessment by clicking Edit on any Assessment and then navigating to the (1) Settings tab.
Within the settings you can change the (2) Time limit. This determines how much time a candidate has to complete an Assessment once they've begun the Assessment. The candidate will see a timer within the Assessment and code editor at all times indicating how much time left they have to complete the Assessment.
Note: Time limits are different than invite link expiration which determines how long candidates have from the time they're invited to an assessment to the time they must begin the Assessment.