Major issue i am facing - search the object using the objectId

[manzil-infinity180]

---> populated data

how to update , delete the data

retrieve is easy as it is in the user collection and also we are populating so it is easy to get the data but how we can update it or delete it from the original collection and also from the user collection we have to do the thing at the same time

this type of thing how to retrieve it ?????

applied:[{
      type:mongoose.Schema.Types.ObjectId,
        ref:"Applied"
     },]