how can i add two filter above the readonly gird

i want to add two filter about departemnt and status above list

how can i add it?

and my expression is written below

a!headerContentLayout(
  header: {},
  contents: {
    a!gridField(
      label: "タスク一覧",
      labelPosition: "ABOVE",
      data: a!queryProcessAnalytics(
        report: cons!DM01_process_report_pointer,
        contextProcessModels:cons!DM01_process_model_pointer,
        query:a!query(
          pagingInfo: fv!pagingInfo
        )
      ),
      columns: {
        a!gridColumn(
          label:"タスク内容",
          value:a!linkField(
            links: a!processTaskLink(
              label:fv!row.c0,
              task:fv!identifier
            )
          )
          
        ),


        a!gridColumn(
          label: "departement",
          sortField: "c4",
          value: fv!row.c4,
          align: "START"
        ),
        a!gridColumn(
          label:"status",
          value:rule!DM01_GetTaskName(status: fv!row.c1)
        ),
      
        
        a!gridColumn(
          label: "申請時間",
          value: text(fv!row.c3,"yyyy年 mmmdd日 hh:mm AM/PM")
        )
        
      },
      validations: {}
    )
  }
)