Hope this is the right place! How do I pose sims?

Yes sim 4 studio 2.2.0.3(vogue) + blender. Just click create animation. This will show you a list of all the animations. Select the animation you want to change and click next and select a save location and save. This will make a package file for the animation. The just click export and select a save location(Dont close studio as there is no way to skip past the indexing process). This will create a blender file you can edit. With poses you just have to move the model into position and save. Animations in sims4 are just a series of poses connected by key frames. Once the pose/animation is how you want it save and import with studio(if you closed studio you with have to select animation to package again to get back to the import/export screen). When you import this will create a new package file. Then just add the imported package file to you mods folder.If you don't see the create animation button in your studio it might be an older version. Remember package files in your mods are high priority and override the existing code.