Easiest way to use this function is to start by 'Recording a Macro'. Once you start recording, save the file to the location you want, with the name you want, and then of course set the file type, most likely 'Excel Macro Enabled Workbook' ~ 'XLSM'
Stop recording and you can start inspecting your code.
I wrote the code below which allows you to save a workbook using the path where the file was originally located, naming it as "Event [date in cell "A1"]"
Option Explicit
Sub SaveFile()
Dim fdate As Date
Dim fname As String
Dim path As String
fdate = Range("A1").Value
path = Application.ActiveWorkbook.path
If fdate > 0 Then
fname = "Event " & fdate
Application.ActiveWorkbook.SaveAs Filename:=path & "\" & fname, _
FileFormat:=xlOpenXMLWorkbookMacroEnabled, CreateBackup:=False
Else
MsgBox "Chose a date for the event", vbOKOnly
End If
End Sub
Copy the code into a new module and then write a date in cell "A1" e.g. 01-01-2016 -> assign the sub to a button and run. [Note] you need to make a save file before this script will work, because a new workbook is saved to the default autosave location!