Importing a list of users into a company

My app has an admin dashboard where the administrators can create new users for their Company. I want them to be able to import a list of Users. They’ll need to import hundreds of users, so manually creating each user will be too slow.

I tried to manually import a list into the DB but encountered an issue when a Thing needs to be mapped.
I exported a list of Users from the DB and used the csv file as a template for importing new Users; however, I cannot map any of the Things. The Users are created, but they aren’t linked to their Company.

Is there a way of doing this?

Hi,
Choose Unique ID field for this.
Note: If you choosing database datatype then, you must have unique id in the csv file. same thing you need to select for importing field name as unique id.