MATE
Set up OpenBangla Keyboard on the MATE desktop environment using IBus.
Before you start
Install OpenBangla-Keyboard first, following the installation instructions.
Open IBus Preferences
From the top panel, go to System > Preferences > Other > IBus Preferences.
The IBus Preferences window will open.
Add OpenBangla Keyboard
Select the Input Method tab.
Click Add, and a new window with a list of languages will pop up.
Select Bengali. You'll see the OpenBangla Keyboard layout listed there.
Select it and click Add. You'll now see two input methods listed on the Input Method tab.
Choose a shortcut
Go to the General tab and choose a Keyboard shortcut for switching between English and OpenBangla Keyboard. In the screenshot below, F12 is used.
That's it! You can now type Bangla using OpenBangla Keyboard whenever you like. To learn how to type with it, see usage guide.