Layout - Element Layouts can also be created at element level. Example below is a simple split panel implementation.
West
Center
<p:layout style="min-width:400px;min-height:200px;">
    <p:layoutUnit position="west" resizable="true" size="100" minSize="40" maxSize="200">
        West
    </p:layoutUnit>

    <p:layoutUnit position="center">
        Center
    </p:layoutUnit>
</p:layout>
                
PrimeTek, Copyright © 2015
All rights reserved.
Running PrimeFaces-6.1-SNAPSHOT on Mojarra-2.2.8.