Rule 21.2 - Joinder of DefendantsTwo (2) or more defendants may be joined in one (1) information or indictment
(a) when each of the defendants is charged with accountability for each offense included; or(b) when each of the defendants is charged with conspiracy and some of the defendants are also charged with one (1) or more offenses alleged to be in furtherance of the conspiracy; or(c) when, even if conspiracy is not charged and all of the defendants are not charged in each count, it is alleged that the several offenses charged:(i) were part of a common scheme or plan; or(ii) were so closely connected in respect to time, place, and occasion that it would be difficult to separate proof of one (1) charge from proof of others.