Hi @vraj,

Im not sure about the drop down or the tooltip, but as for the lock, you can simply hide (uncheck the “visible” column property) the columns that you dont want to export. You can also create new List Views with the columns  that you want to export as an alternative. If possible, please elaborate on what you mean/ want to do with the drop-down column.

Kind Regards

Prineel

You need to create your own service broker for those specific requirements

https://help.k2.com/onlinehelp/k2five/devref/current/default.htm#Extend/SmO/Custom-Service-Brokers.htm%3FTocPath%3DExtending%2520the%2520K2%2520Platform%7CSmartObjects%7CCustom%2520Service%2520Brokers%7C_____0

https://help.k2.com/onlinehelp/k2blackpearl/devref/4.7/default.htm#StaticDescribedBrokers.htm