Thanks for your message. We agree that IBC is currently insufficiently documented. We are working on a paper documenting IBC that we expect will be published in 2019. In the meantime, please refer to the help files built in to to LEAP as well as these introductory pages.
Is there already any guidelines in how to operating IBC and activating IBC in the LEAP? Because my country Indonesia, is eligible too (https://leap.sei.org/default.asp?action=IBC) however, I still do not understand in how to using IBC.