# Assign Operator Shift
In the 3Dolphins application, agents can check-in and check-out according to a predetermined shift schedule, as shown images below.
To be able to do that, the main thing you have to do is assign the agent to the shift you have added. Select shift and click the **‘Add Team’** button (
). In the pop-up windows assign operator shift, you can choose an agent by clicking the **‘plus’** button (
).
If the agent is successfully assigned to shift, the agent will appear in the list of operators and the agent can make attendance following a predetermined shift schedule.
However, If the operator is already assigned to another shift around the same time, you will receive a warning notification and cannot add a shift operator as below.
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