input: 
  def create_bpmn_diagram(process_label: str) -> None:
      """
      Create a BPMN diagram for FOMDES process 1 using Python and the bpmn_pgv library.
      The diagram should include clusters for Secretaría Ejecutiva, Presidencia, and
      Presupuesto/Administración, with specific tasks and edges defined within each cluster.
      Additionally, include nodes for SIGEFOMDES Administración and SISAC, and connect them
      to the appropriate clusters using dashed edges. Finally, save the diagram as a PNG 
      file named "proc4.png" and a DOT file named "proc4.dot".
      
      Example:
      for create_bpmn_diagram("Liquidación de Créditos")
      """
      
      from bpmn_pgv import *
      import pygraphviz as pgv
  
      PROCESS_LABEL = process_label
      # A graph for FOMDES processes
      F = pgv.AGraph(strict=False, directed=True)
  
      F.graph_attr.update(label="", rankdir="TB", splines="ortho", labelloc="b",
                          size="8, 7.5", forcelabels="true", ranksep="0.25", fontname="Liberation Sans Narrow Condensed")
      F.node_attr.update(fontname="Liberation Sans Narrow Condensed")
      F.edge_attr.update(fontname="Liberation Sans Narrow Condensed", fontsize="10")
  
      se_cluster = {"se7": ("Recibir el documento protocolizado", "start"),
                    "se8": ("Revisar el documento protocolizado", "human"),
                    "se9": ("", "end")}
  
      se_edges = {"se7": {"se8": {}},
                  "se8": {"se9": {"style": "invis"}}}
  
      SE = add_cluster(F, "se", "Secretaría Ejecutiva", se_cluster, se_edges)
  
      p_cluster = {"p1": ("Firma del cheque", "human"),
                   "p2": ("Entregar cheque a beneficiario", "message")}
  
      p_edges = {"p1":{"p2": {}}}
  
      P = add_cluster(F, "p", "Presidencia", p_cluster, p_edges)
  
      pr_cluster = {"pr2": ("Verificar documentación legal y elaborar certificación de disponibilidad", "human"),
                    "pr3": ("Crear las cuentas por cobrar", "human"),
                    "pr4": ("Generar tablas de amortización", "human"),
                    "pr5": ("Imprimir y firmar orden de liquidación y cheque", "human")}
  
      pr_edges = {"pr2": {"pr3": {}},
                  "pr3": {"pr4": {}},
                  "pr4": {"pr5": {}}}
  
      PR = add_cluster(F, "pr", "Presupuesto/Administración", pr_cluster, pr_edges)
  
      F.add_node("SIGEFOMDES Administración", image=IMAGE_PATH + "database.png", shape="plaintext", label="", xlabel="SIGEFOMDES Administración")
      F.add_node("SISAC", image=IMAGE_PATH + "database.png", shape="plaintext", label="", xlabel="SISAC")
  
      global_edges = {"Beneficiario":  {"se7": {"style": "dashed"}},
                      "se8": {"pr2": {"style": "dashed"}},
                      "pr3": {"SIGEFOMDES Administración": {"style": "dashed"}},
                      "pr4": {"SISAC": {"style": "dashed"}},
                      "pr5": {"p1": {"style": "dashed"}},
                      "p2": {"se9": {"style": "dashed"}, "Beneficiario": {"style": "dashed"}}}
  
      add_edges(F, global_edges)
  
      F.draw("proc4.png", prog='dot')
      F.write("proc4.dot")
  
output:     
      F.add_node("Beneficiario", image=IMAGE_PATH + "human.png", shape="plaintext", label="", xlabel="Beneficiario")
  
      F.add_edge("Beneficiario", "se7", style="dashed")
      F.add_edge("se8", "pr2", style="dashed")
      F.add_edge("pr3", "SIGEFOMDES Administración", style="dashed")
      F.add_edge("pr4", "SISAC", style="dashed")
      F.add_edge("pr5", "p1", style="dashed")
      F.add_edge("p2", "se9", style="dashed")
      F.add_edge("p2", "Beneficiario", style="dashed")
  