in different views sharing the same ViewModel - some of the properties that are required in one view are not required in other

Question

Here is a ViewModel I have created for UpdatingApplication

using System.Threading.Tasks;

namespace MEMineralResources.Common.Models.Application
{

  public class EditApplicationModel
  {
      public int DevisionId { get; set; }


    public int ApplicationId { get; set; }


  Required(ErrorMessageResourceType = typeof(MEMineralResources.Resources.Resources),
     ErrorMessageResourceName = "ErrorMessageObligatory")]
    public List<ResourceMineral> ListResourceMinerals { get; set; }


          [Required(ErrorMessageResourceType = typeof(MEMineralResources.Resources.Resources),
          ErrorMessageResourceName = "ErrorMessageObligatory")]
    [Display(Name = "MainUser", ResourceType = typeof(Resources.Resources))]
    public int MainUserId { get; set; }


          [Required(ErrorMessageResourceType = typeof(MEMineralResources.Resources.Resources),
          ErrorMessageResourceName = "ErrorMessageObligatory")]
    [Display(Name = "HelperUser", ResourceType = typeof(Resources.Resources))]
    public int HelperUserId { get; set; }


     [Required(ErrorMessageResourceType = typeof(MEMineralResources.Resources.Resources),
          ErrorMessageResourceName = "ErrorMessageObligatory")]
    [Display(Name = "HelperUser", ResourceType = typeof(Resources.Resources))]
    public int HelperUser2Id { get; set; }


        [Required(ErrorMessageResourceType = typeof(MEMineralResources.Resources.Resources),
        ErrorMessageResourceName = "ErrorMessageObligatory")]
    [Display(Name = "PloshtNahodishte")]
    public decimal AreaSize { get; set; }

    [Required(ErrorMessageResourceType = typeof(MEMineralResources.Resources.Resources),
        ErrorMessageResourceName = "ErrorMessageObligatory")]
    public string SelectedAreaTypeID { get; set; }

    //a lot other properties which are common for all divisionIDsa


  }
}

SO So I've got a links like his - Application/UpdateApplciation/?divisionID=2

So depending on this property ehich you see also in teh model - divisionId I should return a view from this viewmodel but slightly different depending on the divisionID

Some of the differences are

1. when divisionID=2 or 3 - ListResourceMineral - is not obligatory and AreaSize - is not required and I will hide it in the model (it doesn't exist)

2. When divisionID=5 - HelperUser and HelperUser2Id are not required also a problem is that Displplay Property is with different value - strange but true.

/ SO I think about Creating Custom Attribute that will be something similar RequireIf(DivisionID=5,6,7)

or the other way is in the code of the when DivisionID = 2 or 3 to remocve the error from the model state

this.ModelState.Remove("AreaSize");

Can you suggest cleaner or better approaches to this problem. Best Regards