public async Task<IActionResult> AddDivisionGroup([FromBody] DivisionGroup divisionGroup)
 {
     try
     {
         divisionGroup = await _organizerService.AddDivisionGroupAsync(divisionGroup, User.Identity.Name);
         return Ok(divisionGroup);
     }
     catch(Exception ex)
     {
         return BadRequest(ex.Message);
     }
 }