A pleading that asserts a claim on behalf of or against a class must set out the proposed
definition of the class and must allege facts showing that the claim or defense may be so
maintained. The pleader must file a motion to certify the class, together with a memorandum and
evidence showing the class certification is appropriate, within 90 days after filing the pleading.
The Court may change the deadline by an order in the case. The filing of an amended pleading
does not extend the deadline.