PoE 3.15 Expedition challenge: Support a socketed Skill Gem with two or more Support Gems.
There are two types of gems in Path of Exile: Active skill gems and Support skill gems:
It includes four types of colors: Red, Green, Blue, and White. Red socketed can only equip red gem, and this is the same case for Green and Blue. A white socket can equip any gems.
In order to support a skill gem, there must be a link between the Active skill gem and the Support gem.
Meanwhile, you must also see whether the Support gem supports the Active gem. For example, Charged Traps Support can be used to support Ice Trap. You can find the support icon.
To make more support gems, these links must be all linked. Also, there is no gem order required.