You can batch add/delete attributes from the Applicant search screen
Log into Access Recruitment CRM
Click Search and then click Applicants
Add criteria as required to search for the batch of applicants you want to update
Click Run Search followed by Action
From here you have four options regarding Attributes:
Add Attributes to All - This will Add an attribute to everyone in the list
Add Attributes to Selected - This will Add an attribute to any highlighted/selected records
Remove Attributes from All - This will Remove an Attribute from everyone in the list
Remove Attributes from selected - This will Remove an Attribute from any highlighted/selected records
Select the required option
Select the Attributes from the list you want to add/remove by highlighting them and using the right hand arrow
Click Next
Review any warnings and click Save to proceed