Your comments

Hello,

Do you mean that task categories will be a kind of ticket sub-categories?

regards,

Tomolimo

Yes, but what would be nice is to harmonize editors among GLPi: Ticket, Problem, Change, Knowledge base, and so on. For Ticket and KB, we may use HTML, but not for Problem, and not for Change

I just made a test with 0.90.5, and it's working well

Hello

You don't need another field, just use the standard mechanism of sub-categories:

Ticket categories can be used with any levels you need:

Infra > CPU

Infra > Memory

Infra > Storage

...

This is the way we are using Ticket categories.