How change keyboard language
I'm using trisquel mini 11.0.1 LXDE .
I have English & Greek in my system.
But, there is no keyboard language panel applet available.
and I don't know how to change from English to Greek (key combination) either.
I DIDN'T UNDERSTAND WHAT YOU WROTE,
but I found some useful info in
https://fahadahammed.com/how-to-add-and-switch-keyboard-layout-in-lxde/
1. right click in the bottom horizontal bar
2. add remove panel items
3. mark spacer and choose Keyboard Layout Handler
4 add it
5 a flag appears , right click on it, choose Keyboard Layout Handler settings
6 erase the tick in keep system layouts
7 add the second language you prefer (in my case , I added Greek)
then if you press the flag icon at the bottom horizontal bar you choose between English and Greek
if you want your own keyboard shortcut to change the language
8 press change Change Layout option, and choose the combination you like