You can bulk update applicant statuses right from the Applicant Grid, and you can also bulk move applicants from one job to another. 

To bulk update applicant statuses, tags, and notes or bulk move applicants to another job:

1.    Select a group of applicants by filtering and check-marking the applicants you wish to update

2.    Click on Select Action and select Update Applicants

3.    Select the options you wish to bulk update from the Update Applicants window and click Update Applicants

That's all there is to it!