prs/prs.mobile.new/PRS.Mobile/CustomControls/MultiButtonUserControl.xaml

<?xml version="1.0" encoding="UTF-8"?>
<Grid xmlns="http://xamarin.com/schemas/2014/forms" 
      xmlns:control ="clr-namespace:PRS.Mobile"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="PRS.Mobile.MultiButtonUserControl"
      Margin="5">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*"/>
        <ColumnDefinition Width="*"/>
        <ColumnDefinition Width="*"/>
    </Grid.ColumnDefinitions>
    <Button x:Name="Button1" Text=" " Grid.Column="0" FontAttributes="Bold" CornerRadius="10" Padding="5" BorderColor="Black" BorderWidth="1" Margin="0, 5 ,0 ,5" Clicked="Button1_Clicked" HeightRequest="60" FontSize="Medium" TextColor="Black"/>
    <Button x:Name="Button2" Text=" " Grid.Column="1" FontAttributes="Bold" CornerRadius="10" Padding="5" BorderColor="Black" BorderWidth="1" Margin="5" Clicked="Button2_Clicked" HeightRequest="60" FontSize="Medium" TextColor="Black"/>
    <Button x:Name="Button3" Text=" " Grid.Column="2" FontAttributes="Bold" CornerRadius="10" Padding="5" BorderColor="Black" BorderWidth="1" Margin="0, 5 ,0 ,5" Clicked="Button3_Clicked" HeightRequest="60" FontSize="Medium" TextColor="Black"/>
</Grid>