Mirage can read any Daz Studio pose (.duf) file.

You can buy poses from sites like daz3d.com or renderotica.com

To appear in game poses need to be copied inside this folder:

Poses for Genesis 2 must be placed inside Poses/g2 folder

Poses for Genesis 8 - inside Poses/g8 folder

Pose files need to be extracted prior to be placed inside Mirage.

Sometimes .duf files are just renamed .zip files. If you extract it - .duf file will look like JSON.

The easiest way to extract multiple .duf files is via Daz Studio.

Settings for Batch Convert:

Click on Add Directory... button and select your directory with poses. Then click Apply.