Basically i had a packet capture file where i need to check the ICMP sequence number to check any packet drops. going each packet one by one and finding out the sequence number is a tedious job. So i was looking to find a way to add another column to display the icmp sequence number.
Its quite easy
1) Go to Edit -> Preference
2) Add a new column and select the field type as custom and give the filter as icmp.seq
3) You can see following result . According to our requirement we can modify the field type.