Restricting Macro to Selected Sheet

Hi, The following macro inserts a template from "room template" into "estimate" which is assigned to toolbar button. The problem I have is that if a user presses the button regardless of what sheet they have active the macro runs and unlocks the "active sheet" and then errors as it can't perform the rest of the function and everything is unlocked! What I would like to achieve is that : If the user is not on the "estimating sheet" then a message box appears stating "not allowed" with just a cancel button and the macro does not run.

ActiveSheet.Unprotect "password"
    
    
    Sheets("Room Template").Visible = True
    Sheets("Room Template").Select
    Rows("1:18").Select
    Selection.Copy
    
    Sheets(" Estimate").Select
    Application.EnableEvents = False
    Selection.Insert Shift:=x1Down
    Application.EnableEvents = True
    ActiveSheet.Protect "password", DrawingObjects:=True, Contents:=True, Scenarios:=True _
        , AllowInsertingRows:=True, AllowDeletingRows:=True
    Sheets("Room Template").Visible = xlSheetVeryHidden
    
    
        
End Sub