View historical contract data in the personnel file

How can I view historical contract data in the personnel file?

Step 1: Open the personnel file of the desired employee.

Step 2: Navigate to the "Employment" tab. Here you can see the current position of the employee on the top and the contract details on the right.
If you scroll down in the same tab you can also see the employee history.

Step 3: To be able to see the contract data of past positions, click on the current position. A drop-down will open where you can select the desired position.