HTML Break for Authorized By on Purchase Order

Hi all,

Can someone help me which are HTML Code of AUTHORIZED BY on purchase order theme ? i cant find any code with authorized by text on the code. Authorized By text are too close with delivery address on Purchase Order, and there is no space for me to signed and stamp.

Please help

It relates to custom fields part
{% for field in custom_fields %}

Edit the contents just after the above line. For example:
{% for field in custom_fields %}
<tr style="padding-top:20px; height:100px">
<td colspan="1">
<div style="font-weight: bold; padding-top: 30px">{{ field.label }}</div>
<div style="padding-top:20px;">{{ field.text | newline_to_br }}</div>