1 Pa. Code § 31.24
This section cited in 1 Pa. Code § 31.26 (relating to service on attorneys); 1 Pa. Code § 33.33 (relating to effect of service upon an attorney); 1 Pa. Code § 35.207 (relating to service of proposed reports); 4 Pa. Code § 89.26 (relating to representation); 4 Pa. Code § 110.1 (relating to praecipe of appearance); 4 Pa. Code § 615.6 (relating to order to show cause); 4 Pa. Code § 615.8 (relating to representation); 16 Pa. Code § 42.107 (relating to supervision of designated agent of complainant; form); 34 Pa. Code § 111.15 (relating to no other pleadings allowed); 34 Pa. Code § 121.34 (relating to objections to assessments); 34 Pa. Code § 131.34 (relating to other filings); 37 Pa. Code § 171.26 (relating to notice of appearance); 37 Pa. Code § 197.9 (relating to appearances); 40 Pa. Code § 17.4 (relating to legal representation); 49 Pa. Code § 31.103 (relating to applicability of other laws and rules); 49 Pa. Code § 31.115 (relating to disciplinary sanctions); 52 Pa. Code § 1.24 (relating to notice of appearance or withdrawal); 52 Pa. Code § 1001.24 (relating to notice of appearance or withdrawal); 58 Pa. Code § 499a.4 (relating to notice of appearance or withdrawal); and 61 Pa. Code § 702.21 (relating to representation).