Just type it in the chat. You may also try #help and check
eqemu.gitbook.io for more commands. They are pretty useful
You may have seen that there is a "ruleset_id" for each rule. This assigns the rules to the zones. In the zone table there is the field "ruleset" for this.
The main EXP Rules are:
- Character:ExpMultiplier
- Character:GroupExpMultiplier
- Character:RaidExpMultiplier
- Character:FinalExpMultiplier