How to create new items on the server [HELP ME]

staff,
I would like to edit new items on my server, Example

LEON weapons are divided into 4 parts, and combining them in one way she Hero weapon, T1, T2 OR T3.
I wanted to do the same, but with a gun RELIC.

Anyone know step by step how to assemble a gun just like the LEON?

I thank

Thank you ... :?:

combinetable.dat, linkedstuff.dat, linkedresult.dat for the serverside and itemcombine.edf for client side, you just need to edit those files

can you show me a picture of how to do this procedure on the client?