There’s unreleased blcli to add/remove them.
If the grammar is stored on the file server, update it there and restart the appserver
If the grammar is stored locally update it in NSH/scripts on each appserver and restart the appserver.
I have the grammar file in both locations -- the documentation was a bit unclear, however it didn't show as an available grammar until I ran the 'blcli_execute ConfigFileGrammar createConfigFileGrammarOnFileServer'. Is it stored in memory? Anyway it seems if you run createConfigFileGrammarOnFileServer that you don't need to restart the appservers.
I'm not seeing any delete/remove commands in that namespace....
Right – when you create… not for the update.