If you require multilingual for your cms pages within PrestaShop store, using phpMyAdmin can achieve this very easily.
For example, I require a cms page to be in both English & Spanish, and even though I’ve enabled the language packages, some cms pages did not have dual tables for the ID’s within the Data Base..
PrestaShop > BO > Tools > Languages
English ID = 1
Spanish ID = 6
In phpMyAdmin, select the portion to ‘copy’ the table that you want to duplicate for your other language.
CMS Table in English
In your newly copied table, adjust your contents language and change the id_lang to your language’s variable; in my case it’s #6.
Adjust Copied Table
After adjustment, your new table should appear with the new language id.
New CMS Table in Spanish
Fairly simple and effect!