Version 72.0.3606.0
Platform 11254.0.0 dev-channel bob test
Firmware Google_bob 8785.262.0
Google_Input_Tools_Version:72.0.20181106.220280811

Steps:
1.Switch to Guest user
2.Add more languages

Actual:
Except English ,can not add more languages

If this is by design, please close it ;