olá, como faço para os players não conseguirem adicionar gods na vip list?

Você tem de calcular as flags junto a de valor 1073741824 (Cannot be added to VIP), alterando-o em seu groups.xml (data/XML).
Como você disse que quer pra GOD's, fiz o calculo com os privilégios e limitações comuns:



groups.xml

Procure pelo groupID do GOD em seu servidor (geralmente 6), e na tag dele, mude o valor do parâmetro flags="" para 232544561766394.
Ficando então como (exemplo):

<group id="6" name="God" flags="232544561766394" customFlags="134217727" access="5" violationReasons="23" nameViolationFlags="170" statementViolationFlags="213" depotLimit="5000" maxVips="500" outfit="302"/>

Aqui estão as flags que eu selecionei pelo Flags Calculator:

--Privileges
	Can not be attacked
	Can convince all monsters
	Can summon all monsters
	Can illusion all monsters
	Can sense invisibility
	Ignored by monsters
	Do not gain infight
	Has unlimited mana
	Has unlimited soul
	Do no gain exhaustion
	Can always login
	Can broadcast
	Can edit all house rights
	Can not be banned
	Can not be pushed
	Has unlimited capacity
	Can push all creatures
	Talk red in private
	Talk red in channel
	Talk orange in help-channel
	Skip spell usage checks
	Skip equip usage checks
	Gain max speed
	Cannot be added to VIP
	Talk red anonymously
	Ignore protection-zone
	Can not be muted
	Permanent premium account
	Can answer rule violations(Not work in 8.7)
	Show group description instead of vocation
	Has infinite stamina
	Can report bugs
	Total invisibility
	Hide health

--Limitations
	Can not attack players
	Do not gain experience
	Do not gain mana
	Do not gain health
	Do not gain skill