Application Form add Locations in Dropdown

Hello,

in the Application-Form I want to add a dropdown with the locations where the job offering ist offered. In the moment it is only possible to add options as string. But every job has other locations. It would be creat if I could use like a variable here wich sets all locations as options. I think the way to that solution should not be so far. But by my self it is not possible. Do you have a hook for me or is it possible to add this feature?

Best regards
Andreas