The court may, on motion, of either party, and on the showing of reasonable grounds therefor, require the attorney for the adverse party, or for any one of the several adverse parties, to produce or prove by his oath, or otherwise, the authority under which he appears, and, until he does so, may stay proceedings by him on behalf of the parties for whom he assumes to appear. Any attorney performing any service for remuneration and which service has or would have a bearing upon the direction or outcome of the case and where the relation of attorney and client exists as to the particular matter being litigated, whether briefing, appearing or other service, and whether temporary or continuous in nature, shall be made an attorney of record in such matter.

R.L. 1910, § 246; Amended by Laws 1965, HB 1108, c. 483, § 1, emerg. eff. July 14, 1965.