Here are a couple of ways:

Via the Tool Usage Analysis Dashboard:
  • Launch Tool #1195 Tool Usage Analysis Dashboard  
  • Scroll down or search for the desired tool #  
  • Select it in the list and choose Show Assigned Employees
  • The popup window will show which of those employees used it in the past month


OR

Via the Security Audit File canned Query:
  • Launch Tool #162 Audit Insider/Employee Activity (SECAUD)
  • Enter the following selection criteria (substitute the tool # you want for the 297 in the sample), and use Enter to produce a list: