grafana/public/app/plugins/datasource/cloudwatch/partials/annotations.editor.html

<cloudwatch-query-parameter target="ctrl.annotation" datasource="ctrl.datasource"></cloudwatch-query-parameter>
<div class="editor-row">
	<div class="section">
		<h5>Prefix matching</h5>
		<div class="editor-option">
			<editor-checkbox text="Enable" model="ctrl.annotation.prefixMatching"></editor-checkbox>
		</div>

		<div class="editor-option" ng-if="ctrl.annotation.prefixMatching">
			<label class="small">Action</label>
			<input type="text" class="input-small" ng-model='ctrl.annotation.actionPrefix'></input>
		</div>

		<div class="editor-option" ng-if="ctrl.annotation.prefixMatching">
			<label class="small">Alarm Name</label>
			<input type="text" class="input-small" ng-model='ctrl.annotation.alarmNamePrefix'></input>
		</div>
	</div>
</div>