For this use Candidate.dat file.
You can see step by step video to load Candidate data using this Link
Please find the below sample template :
METADATA|Candidate|CandidateNumber|CandPrefLanguageCode|StartDate|ConfirmedFlag|CountryOfBirth|DateOfBirth|RegionOfBirth|Source|SourceMedium|TownOfBirth|VisibleToCandidateFlag
MERGE|Candidate|CT123|US|2019/03/20|Y||1980/08/05||direct Source|||Y
METADATA|CandidateAddress|CandidateNumber|EffectiveStartDate|AddressLine1|AddressType|AddressLine2|Country|PostalCode|Region2|Region1|TownOrCity|EffectiveEndDate
MERGE|CandidateAddress|CT123|2019/03/20|1257 Test1|HOME|Test|US|12576|NC|Wayne|Pikeville|
METADATA|CandidatePhone|CandidateNumber|DateFrom|PhoneType|PhoneNumber|CountryCodeNumber|AreaCode|DateTo|Extension|LegislationCode|SpeedDialNumber|Validity|GUID
MERGE|CandidatePhone|CT123|2019/03/20|H1|9605804|1|262|4712/12/31||US|||
METADATA|CandidateName|EffectiveStartDate|EffectiveEndDate|CandidateNumber|NameType|LegislationCode|FirstName|LastName
MERGE|CandidateName|2019/03/20||CT123|GLOBAL|US|Amar|Test
METADATA|CandidateProfile|CandidateNumber|ContentType|ContentItem|SectionContext|DateFrom|ItemDate7|ItemNumber9|ItemText2401|CountryGeographyCode|CountryCountryCode|ProfileItemId
MERGE|CandidateProfile|CT123|DEGREE|BA - Bachelor of Arts|PERSON_DEGREE|2019/03/20|2019/03/20|||US|US|122
