Yes, it is possible. To define a deadline for testing a process, you must:
In the process configuration, in the "Expires" section, place the date and time when the process will expire. After this, the links sent to the candidates will not work and a message will indicate that the test is no longer available.
Click on the "Save" icon, located on the right.
After the date indicated, candidates will no longer be able to access the test.