Is there a way to limit the access level selection list in the form of a new article to the user from a group Editor?
Your question confuses me a but correct me if I am wrong OK? You want to allow front end posting of new articles per user level. Is that it?
Well, assuming that *IS* it, all very easy. Let's make an assumption here and say that you have user level Public for people not registered or not logged on right now, Registered for those who are logged on and definitely registered and Super User for you. If that is right and you want to make SOME of those Registered members able to post new items first off, where? Eg, do you want them to be able to post a new item all over your site anywhere they like or just within a particular area? I will make the assumption that you only want to give them access to a particular area so read below:
I run www.readournovels.com
and it was important to me that I have user helpers help me run things. So I have created categories for novels and under those categories, user access levels where a user I grant access to can publish, unpublish, edit, create but not delete. Unpublish is almost the same as delete but I may see things differently to the category manager so I wanted final say. In order to accomplish that, I did this, say for Science Fiction to keep this straight in my head:
1) Go to the user manager and create a user Group called Science Fiction with a parent of Public. A parent of Public is IMPORTANT.
2) Go to the particular user I want to have that access and put a tick against Science Fiction for him/her remembering that multiple ticks may mean different things you do or do NOT want to happen. So be careful there.
3) Go to the Top Level category under which Science Fiction is a sub category and ensure that no permissions are active for anyone who isnt a Super user.
4) Having made sure of that, go to the Science Fiction sub category and click Permissions. Under there, click on Science Fiction and change whatever you wish the user to have to Allowed. Remember that whatever you are allowing them to have can come back at you in the future so be sure about this.
That is it. I recommend you create yourself a test user and assign that special permission to the test user then go to the front end, logon as that test user and go to a category where the test user does NOT have any permissions to see that all is OK and nothing can be done there then go to the category where the user DOES have rights above just Registered and see that those permissions now show up on the front end as you wish them to be.
Do yourself a favour and dont allow them DELETE access because the phrase "shut up" in some countries is akin to "F... Off" in other countries. So interpretation of something that offends your higher access user may lead them to want to get rid of that article. They can UNPUBLISH it which will get rid of it from view but you can then check it out for yourself and decide if it should be properly deleted or whether it was just something stupid. Add to that the possibility that some article on your site may well be from the sworn enemy of that person. Obviously you can have as many people as you like with that higher access so multiple people able to do the same thing in that category.
All you have to do after that is repeat that process for each category to have specialised access to one part of your site but not all of it. So, joe blow can edit one category but no other while Jane Smith can edit yet another but not the one Joe Blow edits.
Hope that helps.