3rd Party Sick Pay

An employee is on Long-term Disability where the Third Party pays the employer and employee taxes with the exception of SUTA and FUTA.  They also issue a W-2 to the employee.  I need to process their 3rd party sick pay through the system to pay the FUTA and SUTA.  My understanding is that this check should just be an in and out.  I need some direction as to how to do this.  This is the first time I have had someone on LTD and I'm a bit confused on the process in this particular situation.

Any assistance would be greatly appreciated!