Tag conditional untuk multi author tersebut seperti di bawah ini.
<b:if cond='data:post.author == "NAMA AUTHOR"'>
HTML
Cari kode berikut ini:<div id='author-box'>
<b:if cond='data:post.authorPhoto.url'>
<img alt='author-photo' expr:src='data:post.authorPhoto.url' height='104' title='author photo' width='104'/>
</b:if>
<span class='author-name'><data:post.author/></span>
<p>INFORMATION.</p>
<div class='author-follow'>Follow me on: <a href='#' rel='nofollow' style='font-weight:700' target='_blank' title='Facebook'>Facebook</a> | <a href='#' rel='nofollow' style='font-weight:700' target='_blank' title='Twitter'>Twitter</a> | <a expr:href='data:post.authorProfileUrl' style='font-weight:700' target='_blank' title='Google+'>Google+</a></div>
<div class='author-close' onclick='document.getElementById('author-box').style.display='none';authoricon.style.left='0';' title='close'>×</div>
</div>
Kemudian tambahkan kode author box itu dengan tag conditional di atas seperti di bawah ini.
<b:if cond='data:post.author == "NAMA AUTHOR"'>
<div id='author-box'>
<b:if cond='data:post.authorPhoto.url'>
<img alt='author-photo' expr:src='data:post.authorPhoto.url' height='104' title='author photo' width='104'/>
</b:if>
<span class='author-name'><data:post.author/></span>
<p>INFORMATION.</p>
<div class='author-follow'>Follow me on: <a href='#' rel='nofollow' style='font-weight:700' target='_blank' title='Facebook'>Facebook</a> | <a href='#' rel='nofollow' style='font-weight:700' target='_blank' title='Twitter'>Twitter</a> | <a expr:href='data:post.authorProfileUrl' style='font-weight:700' target='_blank' title='Google+'>Google+</a></div>
<div class='author-close' onclick='document.getElementById('author-box').style.display='none';authoricon.style.left='0';' title='close'>×</div>
</div>
</b:if>