Referring To Sheet Name Through Variable In VBA?

I have a workbook with a list of staff in it. The format is: the manager's name is in row 1, the 8 or so team members are listed below. And again in row 20, there is a manager's name with 8 or so team members listed below. This is duplicated over many columns and multiple sheets. The sheets are all named after the ops-managers who manage all the managers on their respective sheet. The book is called "stf.xls"

I'm using the following code to look up a staff member and return who their manager and ops-manager is to the relevant cells in a different workbook:

Code:
Sub AdvisorFind()
Dim Wsht As Worksheet
Dim Slookfor As String

[Code]....

My problem is how to return the manager's name for a staff member in the middle of the book. Activesheet. is the last worksheet so no good. Wsht.name.Range(manager) is what I want to do but I don't know the correct syntax.