komorebi/docs/common-workflows/set-display-index.md

Setting a Given Display to a Specific Index

If you would like komorebi to remember monitor index positions, you will need to set the display_index_preferences configuration option in the static configuration file.

Display IDs can be found using komorebic monitor-information.

Then, in komorebi.json, you simply need to specify the preferred index position for each display ID:

{
  "display_index_preferences": {
    "0": "DEL4310-5&1a6c0954&0&UID209155",
    "1": "<another-display_id>"
  }
}