A limited set of actions can assigned via macro commands. Incompatible actions are ommited from the generated macro. Also note that Macros are limited to 15 lines each.
Valen Bree
The VerHotbar
From Bun Boss video
Based on Squintina's layout, but with tweaks that fit my brain better. ST on chotbar 1, AoE on chotbar 2. I hit R1 (right bumper) to change to the AoE and sit on that chotbar as needed. Since RDM is my Eureka job, I have Eureka Potion set to chotbar 3, LD