[Help] Event match rule Item

I do wonder how such items are not allowed in EventMatch, eg "Angel Slayer Crt.Damage"

ID: 6590

[item]

DefaultAllow = 1

ExpItemCnt = 2

 

/ / Angel Slayer Crt.Damage

ExpItemID0 = 6590

this block here so when you eat for the event can not equip it, but if you already have equipped him not remove the hand, wanted removece the hand when desired start event,

  another has a command and that:

/ / eventmatch item_rule [match_id] [allow_all | deny_all | A (item_id) | D (item_id)] ...

 

/ / lock eventmatch [match_id] [1 | 2]

 

/ / unlock eventmatch [match_id] [1 | 2]

how these commands? how can I use them?