You make a group for timezones and give the group it's respective properties found here: https://ddnet.org/settingscommands/ (they're at the very bottom)
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Then you can place the tune zones according to their group to do their things
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I.e you can make tune zone group 1 make hammer stronger, then when you place down tune zone that's group's set to 1, hammering a player while standing in the tune zone will be stronger based on how it's set(edited)
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This is just from my light understanding when I tinkered with them, I don't really know any complex stuff