Click on the MERC tab on your inventory. You get four slots to insert items for your merc: waist, shoulders, ear and neck. No idea why limited to those 4 and the default images used for the slots are nothing like what you can put IN the slot.
Funny how the base stats for mercs are packed high for AGI. I guess so that's so they can avoid getting whacked. Or is it to make it easier for them to run like **** when they bail?
Sippin 110 DRU *** (formerly) Max AA *** Firionia Vie
Master Artisan (300) * Baker * Brewer * Fletcher * Jeweler * Potter * Researcher * Smith * Tailor
My crew: 110 WAR ENC CLE MAG WIZ 100 SHD BER RNG PAL SHM Master Alchemist *** 85 ROG Master Tinkerer & Poison-Maker