How to make a grid of JSF composite component?

A composite component gets indeed rendered as a single component. You want to use a Facelet tag file instead. It gets rendered exactly as whatever its output renders. Here's a kickoff example assuming that you want a 3-column form with a message field in the third column.

Create tag file in /WEB-INF/tags/input.xhtml (or in /META-INF when you want to provide tags in a JAR file which is to be included in /WEB-INF/lib).

<ui:composition
    xmlns:c="http://java.sun.com/jsp/jstl/core"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:ui="http://java.sun.com/jsf/facelets">

    <c:set var="id" value="#{not empty id ? id : (not empty property ? property : action)}" />
    <c:set var="required" value="#{not empty required and required}" />

    <c:choose>
        <c:when test="#{type != 'submit'}">
            <h:outputLabel for="#{id}" value="#{label}&#160;#{required ? '*&#160;' : ''}" />
        </c:when>
        <c:otherwise>
            <h:panelGroup />
        </c:otherwise>
    </c:choose>

    <c:choose>
        <c:when test="#{type == 'text'}">
            <h:inputText id="#{id}" value="#{bean[property]}" label="#{label}" required="#{required}">
                <f:ajax event="blur" render="#{id}-message" />
            </h:inputText>
            <h:message id="#{id}-message" for="#{id}" />
        </c:when>
        <c:when test="#{type == 'password'}">
            <h:inputSecret id="#{id}" value="#{bean[property]}" label="#{label}" required="#{required}">
                <f:ajax event="blur" render="#{id}-message" />
            </h:inputSecret>
            <h:message id="#{id}-message" for="#{id}" />
        </c:when>
        <c:when test="#{type == 'select'}">
            <h:selectOneMenu id="#{i