Hide tabs in the editor on frontend

Hello again !

I have a new question : i have items created on a site (no kidding !!! ) and users who can edit some items on frontend. The users allowed to modify some content are in a specific group in Joomla created for this and they are "children" of "authors" group.
Now, i want to avoid some little thing :
- some field should not be changed (category) and some should not be shown (some flexicontent fields)
- some tabs should not be shown also (tabs "description" as i have a specific tab for these contents, tabs version, etc...)

How can i achieve this ?
Thanks !!
Xavier

Note :
I saw this thread : flexicontent.org/forum/20-general-suppor...ty-tabs-in-form.html
but it does not give me the "good" solution : i want to hide some tabs and fields for a specific group...

Ok.

I tried to change the "ACL-Hide in frontend", it works for the description tab but it hides the description for everybody...

I don't find how to hide for the tabs "publish" and "Meta SEO" again, only for a specific group...
If i hide the fields : alias, category, language in frontend, do will have an issue when people will modify their content ?

Note also : if i ask, that's because i add in the past some field already filled in content lost and i don't want to lose anything....
Thanks  again
Xavier

Ok. As i can't find a way to have a different behavior for different groups, i have modified the view in configuration.
It is not "the" solution as i would like to get one config by group, but right now, i can do with this. Maybe it is not directly possible with Flexicontent right now
Have a nice day !
Xavier

go to your type > form tab
disable field unwanted
add skip in every tab unwanted
finishing by a little css display none

Hi Micker,
That's what i did before your answer and it works.
But this is not the real question : the question is how to make this :
- for different groups of users (some author must not see some tabs but some others should)
AND
- for different type of content (if i have 3 types, i would like to have some tabs shown and others not)

Thanks
Xavier