A candidate can either be exported as a prospect or as an applicant through greenhouse. If a candidate seems to be a potential fit for the role but hasn't applied yet, they can be chosen as Prospects. Refer this
Before proceeding, make sure greenhouse is integrated into your Findem account. Integrating Greenhouse ATS
And Add Prospect permission is enabled
From the Searches Page. Select the ATS Option by clicking the three dots.
A dialog box will appear as shown below.
You can toggle between As a prospect and As an applicant
Click on the Save option at the bottom right corner of the box