practice/practiceApplicaiton/AppShell.xaml

<?xml version="1.0" encoding="UTF-8" ?>
<Shell xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
       xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
       xmlns:local="clr-namespace:practiceApplicaiton"
       x:Class="practiceApplicaiton.AppShell"
       Shell.NavBarIsVisible="True">

    <TabBar>
        <Tab Title="Бронирования" Icon="booking.png">
            <ShellContent ContentTemplate="{DataTemplate local:BookingsPage}"/>
        </Tab>
        <Tab Title="Клиенты" Icon="client.png">
            <ShellContent ContentTemplate="{DataTemplate local:ClientsPage}"/>
        </Tab>
        <Tab Title="Комнаты" Icon="room.png">
            <ShellContent ContentTemplate="{DataTemplate local:RoomsPage}"/>
        </Tab>
        <Tab Title="Отчёт" Icon="report.png">
            <ShellContent ContentTemplate="{DataTemplate local:ReportPage}"/>
        </Tab>
    </TabBar>
</Shell>