No.
Unfortunately ON does not have a feature to *group* objects or
"anchoring" an object to another one.
AFAICS this is one of the most serious shortcomings in the current
version of ON.
I assume that this issue will have been subject to many requests for the
next version.
Still you may post this as a suggestion for the next version in
"Connect", the place for submitting suggestions and bug reports to the
developers team:
http://connect.microsoft.com/onenote/
(most probably after searching there and just voting and adding one more
comment to threads already opened there).
When done, pls drop a note with the URL in here so that we can jump in
and vote for your suggestion.
Rainald