I think you mean:
seb_blog/positions/*content_name*/intro/*position_name*.php
I have tryed both none work.
In Templates in joomla:
In Forms & Content Types:
I can not select Seb Blog.
If I change the template Type to Content/Form I can chose Seb Blog but then I can not put feilds in Intro, if I put feilds in Content It does not work as well.
I am very cunfused over all this .
Please help.
Thnx