void ExecuteSaveDelegationCommand()
        {
            var delegation = new Delegation
            {
                Employee    = Employee.Model,
                From        = From,
                To          = To,
                Place       = Place,
                Description = Description
            };

            _dataService.AddDelegation(delegation);
            var delegationWrapper = new DelegationWrapper(delegation);

            Delegations.Add(delegationWrapper);
        }