After some research I can answer my own questions. If anyone is interested:
* You can get custom poses by placing the desired .png file here:
- Documents\TValle Games\Some Modeling Agency\Poses\v08\
* To save yours use the cellphone, click the middle button to swap modes and take a photo.
* To delete or add a girl in "single interview' delete or add the desired .png file here:
- Documents\TValle Games\Some Modeling Agency\Characters\v08\
** You can find both poses and girls here:
https://f95zone.to/threads/some-modeling-agency-girls-poses-sharing.102731/
* Aparently is possible to customize a girl's looks using something called Monkey, as I haven't tested yet I can't confirm.