I'm working on a project in which users or clients work exclusively from the front end.

In view of this I would like to customize the logo and the text of Article Add logo for my website and text Add Add Item by item.

What would be the right way to do the above process.

Annex image.

The correct way would be to override the itemform.php file.

The code that generates the logo and the title is
To learn more about overrides please read this tutorial: getk2.org/documentation/tutorials/174-templating-with-k2-and-the-concepts-of-sub-templates

Thank you for your answer Krikor Boghossian:

I have searched the following path

Componente/com_k2/templates/default/itemform.php
<h2 class="header icon-48-k2">
<? php echo (JRequest :: getInt ('cid'))? JText :: _ ('K2_EDIT_ITEM'): JText :: _ ('K2_ADD_ITEM')>?
</ h2>

I modified to:
<h2 class="header icon-48-k2">
<? php echo (JRequest :: getInt ('cid'))? JText :: _ ('Add Product'): JText :: _ ('Agregar Producto')>?
</ h2>

With this I have managed to solve the problem of the text.[/b

On the other hand I found a solution Antonios Pazarlis k2 forum where he mentions the following to changed
It Should be under:

public_html/sitename/media/k2/assets/images/system

named as K2_Logo and remember to clear your browsers cache Because You Could continue seeing it, as it gets saved in the cache.ar k2 logo on the front end:

On this route I have replaced the three logos I asiganado k2 and joomla logo as an example.

The result was satisfactoriom see pictures.