(a) Within the period agreed on by the parties or determined by the arbitration tribunal:
(1) the claimant shall state:
(A) the facts supporting the claim;
(B) the points at issue; and
(C) the relief or remedy sought; and
(2) the respondent shall state the defense.
(b) A party may submit with the party's statement any document the party considers relevant or may add a reference to a document or other evidence the party will submit.
(c) The parties may otherwise agree as to the required elements of the statements required by Subsection (a).