Perform a vlookup before moving to a pivot table

Hi, I have a sheet with 2 colums, Employee Id and Located

employee ID | Located |
123 yes

I have another sheet that has 2 colums. Employee Id and Employee Name

Employee ID | Employee Name |
123 | John Doe |


I want a pivot table that look like this:

Employee ID | Employee Name | Count of located
123 | John Doe | 15


apparently i cannot use vlookup within the pivottable. So how can I go about getting the pivottable to dynamically associate the employee id with the employee's name?