If you have many different exams to set up and if you have the same students and customizations you don't have to set it up one by one. Just create the exam from a template, add the information you need by ticking the boxes in settings and save.
Once you have created the exam from the template you can copy it and change the name of it. All the settings and customizations will follow the copy.
This will hopefully be a lot quicker for you!
Add settings in the template:
Copy by clicking on the three dots in the top right corner: