https://sims4studio.com/thread/2930/create-pose-pack-works-mod

Introduction

This tutorial will show you how to create a Pose Pack that works with the Pose by Pack feature of the Sims 4 Pose Player. It will not show you how to create a pose or animation. If you're interested in learning to make a pose that is covered in other tutorials here in the Sims 4 Studio CAS/Pose tutorial section.

What you will need

Sims 4 Studio 2.6.0.0 (Sugar) or above

Blender 2.70

Andrew's Pose Player v.2 - note: you must have the second version or above to use the Pose by Pack feature and test your Pose Pack in the game.

Instructions

1. Open Studio and select Clip Pack under the Animation button.
2. Click the Animation button. Name and save the .package. During this step Studio will create an empty clip.package with a unique internal name that is all ready for you to add poses to.

The next screen you see will have two tabs. The first tab is the Pose Pack tab. The information you type into this section corresponds to the main Pose Pack pop up that appears in the game when a player first clicks the Pose by Pack option for their Sim. They match up as follows:

In the game -

In Studio's pose pack tab -

Enter your pose pack name and description and import your pack icon.

If you want to do these steps after you've loaded the pose pack with your poses just click the Clips tab to get started on adding your poses to the pack. You can switch back and forth between these tabs freely.

Pose Pack icons should be entered as 64 x 64 .pngs. If you do not import your own custom pose pack icon you will have the S4S icon by default. You only need to enter one Pose Pack icon per pack.

The next tab you need to work with is the Clip tab. This is the section where you will add new poses to the Pose Pack. When a player chooses your Pose Pack from the popup above they will see this menu: