Make the main tank walk first and settle to the Dragon's left while protected carries scale into the single target.
This is the exact shipped Demo 0.5.5 boss formation, carried forward after the 0.5.6 through 0.5.11 notes announced no formation change: authored cell 3,4 maps to the center of the enemy front row at r0c3.
The tank starts left of center to rehearse Aesah's walk-first rule; Karsu and Irini represent dedicated boss scaling behind it.
The encounter set is current to Demo 0.5.11. The strategic interpretation remains tied to Demo 0.5.2; it should be tested again whenever targeting or enemy behavior changes.
Enemy identity and listed abilities are reviewed through Demo 0.5.11. No unverified damage or timing values are added here.
The shipped Demo 0.5.5 stage data places this boss at authored cell 3,4 (front-row center), mapped here to enemy slot r0c3. Patches 0.5.6 through 0.5.11 did not announce a formation change.
Positioning and team-role notes are adapted from Aesah's Demo 0.5.2 Red Rift guide. They are starting points, not claims that one fixed formation solves every roll.