Subsection (b) carries forward former OCGA Sec. 53-7-33, which relieves banks and trust companies from giving bond. Subsection (c) replaces portions of former OCGA Secs. 53-6-22 and 53-6-26 and allows for the waiver of bond by the unanimous consent of the heirs of an intestate estate. This waiver is available only to personal representatives and thus is not available in the case of temporary administrators. (As indicated by the definition of ‘‘personal representative’’ that appears in Code Section 53-1-2, a temporary administrator is not included in that category.) Subsection (d) provides that this Code section does not override the requirement that County Administrators give bond and those provisions that allow the judge to impose bond where cause for such is shown.