To import a PSD, in the Studio tap on Import and on Files, and then choose your PSD file.
To import a PSD in the shot, go to the layers panel.
Tap on 
then Open Layers to open the layers panel, and tap on 
and choose Files.
After choosing the PSD file, you can choose between two types of import: vertically or horizontally.
Vertically: each layer will contain only one drawing sheet.
Horizontally: if the PSD is an animation, the corresponding images will be sorted in the timeline according to their layer group.
For example, in another software, if you have layers inside a layer group, the layers will be changed into drawing sheets and the layer group will become the layer.
