v117 Need Help for Modifying Option of Create a Character

Hi all,

I am using TimelessMS REV5 Source. I wish to add Jetts or Demon Slayer or any character type should have in v117 in the "Create a Character" option.
The following is the v114 screenshots from Youtube: "https://www.youtube.com/watch?v=vyDTKsy8o7k"
Attachment 133276
The above screenshot showed that the Jetts is available in v114.

However, I am using v117 and I could not see this option at all.
The following is the v117 screenshots from currently what am I facing from my server created:

Attachment 133277
I tried to find the java source files such as "CharLoginHandler.java" in the "CreateChar()" method but I am not sure which part of the code indicate to modify the option of create a character.

Anyone can spare help for pointing out which java source or script or wz should I looking at to modify?
So that player is able to choose the job such as Jett while creating a character.

Thank you very much for helping this issue.

*bump

If I'm not wrong, the character creation screen of the old UI can only be modified by editing the client, so it is not possible to add more options.

@Sonnyeb
I see, if that is the case then really sad that it could not easily to be tweaked to become GMS like UI. I wonder how can v117 does not have the option like Jett or Demon Slayer but v114 is included them.

I know the alternative way is type command in the game to become the specific job of which are not in the UI selection. However, this is complicated to new player.
Anyway thank you very much for your prompt reply.

EDIT:
@To all
If you have better suggestion kindly post it here. Thanks a lot!

v117 does not have the option for Jett or Demon Slayer on the selection screen because they disabled them for creating for acouple patches.

@blkancientss
I see, sounds the GMS/MSEA blocked the options for those 2 jobs for v117. The only option for this issue for v117 from what I can think is only to get job through NPC. Thank you very much for your clarifications.