How do you add a new module position?

Inserting the code

• Open the index.php file of the Template you wish to edit
• Locate the place in the Template where you wish to put the new position.
• Insert

<jdoc:include type="modules" name="newposition"   />

• The variable can be used (between existing tags) to replace an image by replacing the <img src="xxx" border="0" alt="">. Or By creating a new tag with its own class/id.
• Open the Template's TemplateDetails.xml file and locate the

<positions></positions> Start and end tags 

• Then add

<position>newposition</position>

• Example

<positions>
  <position>debug</position>
  <position>position-0</position>
  <position>position-1</position>
  <position>position-2</position>
  <position>position-3</position>
  <position>position-4</position>
  <position>position-5</position>
  <position>position-6</position>
  <position>position-7</position>
  <position>position-8</position>
  <position>position-9</position>
  <position>position-10</position>
  <position>position-11</position>
  <position>position-12</position>
  <position>position-13</position>
  <position>position-14</position>
  <position>position-15</position>
  <position>newposition</position>
</positions>

https://docs.joomla.org/How_do_you_add_a_new_module_position%3F