vTiger 7.4 - HowTo - notecontent - HTML

Hello.
I need a StepByStep tutorial to create custom fields in HTML format in vTiger.
Same like Documents - "notecontent" = Visible and Edit as HTML
I need fields for Organisations, Contacts and so on.

I need a quick solution.
(This is a small part of a larger project over the next few months.)
I am happy to send codes and files. There is NO direct access to my vTiger!

# I have
- Access to SQL (vtiger_field, vtiger_notes, vtiger_account, vtiger_links, and so on...
- Access via SSH to directory
- Basic understanding

Which option is easier... Which option, I do not care...
# Option A
Für das Modul Accounts, Contacts, Tickets, etc. and a specific field

# Option B
System-wide if label = note01, note02, note03, note04, note05

# Attention
Die Felder finden sich nicht in der Tabelle vtiger_xyz_cf!
Sample NO: vtiger_accountcf
Sample YES: vtiger_account