I show Cross Hotbar 3 (Left) with both of the expanded trigger controls, so you can easily add in another 8 actions if you prefer, I use XHB 8 as a shared bar between all classes for traversal and general actions outside of combat. Role actions are consistent among my layouts, and so are general actions. The macro icon is a placeholder for a Tincture/Gemdraught.

this layout works for levelling from RDM unlock through Dawntrail. main crossbar is your single target spells & burst rotation, and the 2nd has your AOE spells

Keybinds for those interested.

I use an mmo mouse so 1-6 on all bars are pressed on the mouse, uisng shift and ctrl for bar 2 and 3. The latter 6 on all bars are pressed uisng the keyboard and shift/ctrl.

The VerHotbar

Toggle between XHB 1 & 3 with R1 with weapon drawn

XHB 1 focuses on single-targets XHB 3 focuses on aoe / multiple-targets

MMO mouse setup with modifiers.

LT-RT | LT-RT setting

Black is right, white is left. there's still a lot of flexibility here, but this is more or less what works for me

riposte > zwerchhau > redoublement

全然わからん。

Hotbars for Lv60 Red Mage.

for each job, I create a "hotbar" that is basically a monitor for cooldowns/any spell/skill I want to see the status of; I also have a hotbar with Role spells & skills, and, Sprint. I would add Second Wind in the missing slot. I use Hotbars 2 & 10 but you can use any Hotbars you want.

for RDM, there are only 6 spells, so you could put them all on 1 column; I don't do this because of how I have my UI setup to accommodate multiple job setups.