This section does not apply to: a lawyer while employed as a part–time magistrate for juvenile cases; or an individual while: performing an affirmative duty required by law; or engaging in an activity related to a case in which the individual is a party or has a property interest. Even if an individual has been admitted to the Bar, the individual may not practice law while employed: except as provided in subsection (c) of this section, as a sheriff or deputy sheriff; in a jail or penitentiary, as: a warden or deputy warden; or a superintendent or deputy superintendent; as a bailiff; as a clerk or deputy clerk of any court or an employee of a clerk; as a register or deputy register of wills or an employee of a register of wills; or as an officer or employee in a juvenile court. An individual employed as a sheriff or deputy sheriff in Washington County who has been admitted to the Bar may practice law in a county other than Washington County. This subsection does not apply to the settlement of small estates as set forth in Title 5, Subtitle 6 of the Estates and Trusts Article. In Prince George’s County, a sheriff, deputy sheriff, warden, deputy warden, clerk, or employee of any court may not prepare or help in the preparation of any form or document that is filed in a court in that county or that affects a case that is or may be filed in a court in that county.