Select the add-in where it was previously downloaded by navigating to the location
find the file my-custom-functionality-master.zip . that you downloaded earlier
Install the previously selected my-custom-functionality-master.zip add-in by clicking on Install Now
Activate the plug-in to be able to use it by clicking on Activate.
Finalizando este procedimento estamos listos para usar el plugin
Using the plugin
1- FTP Client
The hosting provider has to provide an FTP User and its corresponding Password.
With them we enter the assigned space navigating to /wp-content/plugins/my-custom-functionality-master to edit the plugin.php file where we put the necessary code.
2- File Manager
We can also access the file manager to edit, upload, copy, delete and download files from any browser.
The most popular ones are cPanel, Webmin, Cyber Panel