It seems to be impossible to tell DokuWiki to start a numbered list with something else than 1. If your list, however, is interrupted by e.g. code, an image or something alike, you can continue numbering by using the WRAP plugin.
PROBLEM
SOLUTION
Changing information on a DokuWiki is always a sensitive thing. It is for this reason that there is a fine grained access control in the DokuWiki. Essentially, there is a hierarchy of privileges where granting the more specific ones (higher number in our list) includes the more general ones.
For namespaces, there are three additional privileges
Note, once you have delete privileges, you are under full control of a namespace. Deleting contents cannot be undone!
Contact the DokuWiki_admin or the sysadmin