create an LDIF for each object like this:
dn: uid=cx,ou=group1,ou=People,dc=company,dc=com
loginShell: /bin/bash
objectClass: account
objectClass: posixAccount
objectClass: top
objectClass: shadowAccount
userPassword:: ...pwhash.....
cn: Your Name
gecos: The Gecos field (infos),,,
gidNumber: 100
uid: xy
homeDirectory: /home/xy
uidNumber: 1040
Then add the thing to the ldap server like this:
ldapadd -v -U admin@fs -h 127.0.0.1 -a -f /path/to/ldiffile.ldif
You might have to play with the authentication of your initial admin user (Maybe user an DN to auth .... depends on your intial setup)
HTH, derjohn