[IMP] pos: write content on the Payment Terminals page

task-3358474

closes odoo/documentation#4675

Signed-off-by: Castillo Jonathan (jcs) <jcs@odoo.com>

content/applications/sales/point_of_sale/payment_methods.rst

@@ -5,20 +5,14 @@ Payment methods
 ===============
 
 To add a payment method, you first need to create it. Go to :menuselection:`Point of Sale -->
-Configuration --> Payment Methods --> Create`. Set a name and select the **payment terminal** or
+Configuration --> Payment Methods --> Create`. Set a name and select a :doc:`payment terminal
-check :guilabel:`Cash` for cash payments.
+<payment_methods/terminals>` for card payments or check :guilabel:`Cash` for cash payments.
 
 .. image:: payment_methods/payment-method.png
    :alt: Creating a new payment method for a POS.
 
-.. note::
+.. seealso::
-   Credentials are mandatory to use a payment terminal. To learn how to configure the different
+   :doc:`payment_methods/terminals`.
-   terminals, check out the following documentation pages:.
-
-   - :doc:`Adyen configuration <payment_methods/terminals/adyen>`
-   - :doc:`Ingenico configuration <payment_methods/terminals/ingenico>`
-   - :doc:`Six configuration <payment_methods/terminals/six>`
-   - :doc:`Vantiv configuration <payment_methods/terminals/vantiv>`
 
 Now, you can select the payment method in your POS settings. To do so, go to
 :menuselection:`Point of Sale --> Configuration --> Point of Sale` and select a POS for which you

content/applications/sales/point_of_sale/payment_methods/terminals.rst

@@ -1,9 +1,31 @@
-:nosearch:
+:show-content:
 
 =================
 Payment terminals
 =================
 
+Connecting and integrating a payment terminal with your POS system allows you to accept multiple
+payment options, including credit and debit cards, making the payment process more efficient.
+
+Configuration
+=============
+
+Go to the :doc:`application settings <../configuration>`, scroll down to the :guilabel:`Payment
+Terminals` section, and tick your terminal's checkbox.
+
+.. image:: terminals/settings-pt.png
+   :alt: checkbox in the settings to enable a payment terminal
+
+Then, follow the corresponding documentation to configure your device:
+
+- :doc:`Adyen configuration <terminals/adyen>`
+- :doc:`Ingenico configuration <terminals/ingenico>`
+- :doc:`SIX configuration <terminals/six>`
+- :doc:`Vantiv configuration <terminals/vantiv>`
+
+Once the terminal is configured, you can :doc:`create the corresponding payment method and add it to
+the POS <../payment_methods>`.
+
 .. toctree::
    :titlesonly: