The layout is built using Photoshop Smart Objects for all basic elements, which means that in order to customize it you do not need much effort. One time to change the item and these changes will be displayed for all similar elements in the layout.
Photoshop artboards
The template uses a Photoshop Artboard, it’s very convenient to see all the available sizes in one file. You can copy and drag items from one artboard to another.
Background
You can easily change the background of one or more(all) artboards in the document.
Step 1
Select one of the Artboards in the Layers Window :
Step 2
Open Window->Properties to select background-color:
Images
Images used in templates are a smart object. You need to open it and replace the image inside.
Step 1
Double click on Image Smart Object
Step 2
The Document(Smart Object) window will be opened. Drag or paste a new picture into it.
Step 3
Save the changes(Crtl+S for Windows or ⌘+S for Mac). After saving, the smart object window can be closed.
Text
In the template, there are two types of text layers – a regular Text layer and a Text layer wrapped in a Smart Object. Changes to conventional regular text layers will be reflected only on the artboard they are on. Changes in the text layers inside the smart objects will be reflected on all the artboards where this tex is used.
Step 1
To edit plain text, go to Step 2. To change the Text inside a Smart Object, open the smart object. Double click on the layer pictogram.
Note that sometimes for additional effect inside Smart Object there can be one more Smart Object. Open it in the same way.
Step 2
The Document(Smart Object) window will be opened. Select Type Tool(T) to change text in the text box.
Step 3
To change the font settings, open the Window->Character
Step 4
Save the changes(Crtl+S for Windows or ⌘+S for Mac). After saving, the smart object window can be closed.
This is all about the basic capabilities of customization. The maximum design performance is limited only by your imagination.