How to interconnect multiple GND pins in Fritzing part

parts help
2

Edit the bus connection in the .fzp file. Here is an example from one of my ESP32 boards:

...
    <connector id="connector14" type="male" name="Pin 15">
      <description>G</description>
      <views>
        <breadboardView>
          <p svgId="connector14pin" layer="breadboard"/>
        </breadboardView>
        <schematicView>
          <p svgId="connector14pin" layer="schematic" terminalId="connector14terminal"/>
        </schematicView>
        <pcbView>
          <p svgId="connector14pin" layer="copper0"/>
          <p svgId="connector14pin" layer="copper1"/>
        </pcbView>
      </views>
    </connector>
...
    <connector id="connector17" type="male" name="Pin 18">
      <description>G</description>
      <views>
        <breadboardView>
          <p svgId="connector17pin" layer="breadboard"/>
        </breadboardView>
        <schematicView>
          <p svgId="connector17pin" layer="schematic" terminalId="connector17terminal"/>
        </schematicView>
        <pcbView>
          <p svgId="connector17pin" layer="copper0"/>
          <p svgId="connector17pin" layer="copper1"/>
        </pcbView>
      </views>
...
    <connector id="connector31" type="male" name="Pin 32">
      <description>G</description>
      <views>
        <breadboardView>
          <p svgId="connector31pin" layer="breadboard"/>
        </breadboardView>
        <schematicView>
          <p svgId="connector31pin" layer="schematic" terminalId="connector31terminal"/>
        </schematicView>
        <pcbView>
          <p svgId="connector31pin" layer="copper0"/>
          <p svgId="connector31pin" layer="copper1"/>
        </pcbView>
      </views>
    </connector>
    <connector id="connector32" type="female" name="Pin 33">
      <description>J5-1</description>
      <views>
        <breadboardView>
          <p svgId="connector32pin" layer="breadboard"/>
        </breadboardView>
        <schematicView>
          <p svgId="connector32pin" layer="schematic" terminalId="connector32terminal"/>
        </schematicView>
      </views>
    </connector>
    <connector id="connector33" type="female" name="Pin 34">
      <description>J5-2</description>
      <views>
        <breadboardView>
          <p svgId="connector33pin" layer="breadboard"/>
        </breadboardView>
        <schematicView>
          <p svgId="connector33pin" layer="schematic" terminalId="connector33terminal"/>
        </schematicView>
      </views>
    </connector>
  </connectors>
  <buses>
    <bus id="GND">
      <nodeMember connectorId="connector14"/>
      <nodeMember connectorId="connector17"/>
      <nodeMember connectorId="connector31"/>
    </bus>
  </buses>

basically you need to change the “connectorId=” connector numbers to match the new connector numbers for your part in the buses section of the .fzp file for the part.

assuming you are using parts editor (which I don’t recommend and don’t normally do!) this should work

In the editor under the list of pins on the right there is a check box that says set internal connections. Once that is checked it will show the internal connections as ratsnest lines which you can then right click on and select delete connection.

This tutorial may help you with all of this:

Peter