Kibana - Multiple Dashboards of single Index with different timestamp field

[charlz]

Is it possible to have different Dashboard of an Index with each different time field?

[warkolm (Mark Walkom)]

Yep. Just define the time field accordingly.

[charlz]

@warkolm
Document structure

{
    "id":50,
    "created_at":"2019-05-10T00:00:00",
     "item":[
          {"id":5, "created_at":"2020-04-10T00:00:00"},
          {"id":11, "created_at":"2020-03-05T00:00:00"}
      ]
   },
  {
      "id":65,
       "created_at":"2019-05-01T00:00:00",
        "item":[
             {"id":15, "created_at":"2020-04-10T00:00:00"},
             {"id":19, "created_at":"2020-03-05T00:00:00"}
         ]
  } 

When dashboard is build for Property "Item"
Property 'Item' is nested Objected, with default timestamp 'created_at' when the time filter has last 2 months, these documents will not listed visualisations.
So it would be better to change the default timestamp filter to 'item.created_at' for Dashboard, but there is no option to change the global time filter for the Dashboard.