Currently the UI looks something like this
In tools like Salesforce, they just give a blank text area to throw values in. It helps when you have a lot of values to create at once.
I am not saying we have to copy what Salesforce is doing but maybe perhaps there is another way. If I have access to Postgres database directly, can I do something through pgAdmin or something?
Export the module, edit field options manually in the export file. Import again.
Agreed there should be an easier way to define multiple at once but for now this is the best way afaik.
How do I import the module back? the module is already in use and have a lot of records
If records exists then it’s a bit harder than that(direct DB changes or exporting the module and reimporting the records). Feel free to create an issue with a suggestion how you’d like to see this solved.
