i>Create as many tiers as you want for Purchase Order model.</li>
</ol>
</div>
<div class="section" id="usage">
<h1><a class="toc-backref" href="#toc-entry-3">Usage</a></h1>
<p>To use this module, you need to:</p>
<ol class="arabic simple">
<li>Create a Purchase Request triggering at least one “Tier Definition”.</li>
<li>Click on <em>Request Validation</em> button.</li>
<li>Under the tab <em>Reviews</em> have a look to pending reviews and their
statuses.</li>
<li>Once all reviews are validated button to