Rule 20.1 - General Procedural Requirements: Policy Statement(a) In all criminal cases, procedures prior to trial should reflect recognition of the possible need for the following three (3) stages: (i) an exploratory stage, initiated by counsel and conducted without court supervision to implement discovery required or authorized under these rules;(ii) an omnibus stage, supervised by the trial court and requiring court appearance when necessary;(iii) a trial planning stage, requiring pretrial conferences when necessary.(b) These stages should be adapted to the needs of the particular case and may be modified or eliminated as appropriate.