Hi, i cannot see volume information correctly (shown as very thin line ) . However, i can see volume information for strike prices
Volume is not displayed for Indices, in this case NIFTY, as Indices themselves don’t have actual trading volume. This is because Indices are not directly tradeable whereas there Future & Option contracts are.
There are platforms which show volume even for Indices, but that is derived volume from summation of all of Index component’s trading volume, and not convey any actual trading volume.