Change the watermark of the endpoint field
On the login page, you can see a field where you can specify how you want to login. This field initially shows a watermark “Select one”. This watermark can be changed by a small change in the file EndPoints.json.
Make sure this file contains the Watermark section.
Specify one or more entries in this section. Each entry should be structured as
"language identifier": "value"
where the supported language identifier can be found here. The value will be the text displayed.
screenshots here