First name field to recognise multiple names

We have an employee whose legal first name is three seperate names with spaces not hyphens. When adding their name to Paycircle, everything looks great until you get to the payroll section whereby it only uses the first of the 3 names and their surname. This is replicated on their payslip, so their payslip does not give an accurate name. Your suggestion was to add the 2nd and 3rd name to the middle name field. This now provides the full correct name on payslips, but not anywhere on my view of the individual. The middle names field clearly recognises multiple names seperated by a space, but the first name field doesn't. Somehow we cannot have both the payslips and Paycircle showing their legal name, and instead either payroll or the employee needs to compromise.