You can enable multiple languages and select your default language. To change language key phrases, go your language directory e.g. for English language go to the file /application/language/English/app_files/system_lang.php . Where as /application/language/English/form_validation_lang.php file is used for validation message text. Here we are providing 76 language in our Smart Hospital –1. Afrikaans
2. Albanian
3. Amharic
4. Arabic
5. Azerbaijan
6. Basque
7. Bengali
8. Bosnian
9. Catalan
10. Cebuano
11. Chinese
12. Czech
13. Danish
14. Dutch
15. English
16. Esperanto
17. Estonian
18. Finnish
19. French
20. Galician
21. Georgian
22. German
23. Greek
24. Gujarati
25. Haitian (Creole)
26. Hebrew
27. Hindi
28. Hungarian
29. Icelandic
30. Indonesian
31. Irish
32. Italian
33. Japanese
34. Javanese
35. Kannada
36. Korean
37. Kurdish
38. Lao
39. Latin
40. Latvian
41. Lithuanian
42. Macedonian
43. Malagasy
44. Malay
45. Malayalam
46. Maltese
47. Maori
48. Marathi
49. Mongolian
50. Nepali
51. Norwegian
52. Persian
53. Polish
54. Portuguese
55. Punjabi
56. Romanian
57. Russian
58. Scottish
59. Sinhala
60. Slovakian
61. Slovenian
62. Spanish
63. Sundanese
64. Swahili
65. Swedish
66. Tagalog
67. Tamil
68. Telugu
69. Thai
70. Turkish
71. Urdu
72. Uzbek
73. Vietnamese
74. Welsh
75. Xhosa
76. Yiddish

To add language, go to Setup > Settings > Languages then click on Add button present at top right corner on the language list page, at click of this button Add Language modal will be open. Here enter Language, Language Short Code, Country Code and then click on Save button.

To activate any language (In which you want to run Smart Hospital), click on Action button present in the last column.

To delete language click on the Remove icon. 

Note – You can not delete default languages.