Left click on the language bar, and the words Arabic (Saudi Arabia) will appear (the other two are CH and EN, I believe you know what it means). Choose this. You can then enter Uyghur.

Uyghur is a phonetic symbol. Every letter has a pronunciation. However, in the process of writing, some letters have different deformations according to the different positions before and after, and there are vowel symbols in the vowel independent body. On the keyboard, each English letter corresponds to a Uyghur letter, and some need to use the shift key. Therefore, you'd better learn the Uighur alphabet first.