prs/prs.desktop/Panels/Employees/EmployeePanel.xaml

<UserControl x:Class="PRSDesktop.EmployeePanel"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:local="clr-namespace:PRSDesktop"
             mc:Ignorable="d"
             d:DesignHeight="300" d:DesignWidth="300">

    <Grid>
        <local:EmployeeGrid x:Name="Employees" />
    </Grid>
</UserControl>