# Add Public Key for a Network

In Polkadot Vault after you add the chain specs and metadata for a network, you then need to add your Public Key for that network so that you can conduct transactions:

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The following steps need to be carried out on your **Polkadot Vault Device**.
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1. Ensure that you have added the desired network chain specs and metadata as described above.
2. `Select` the **Key Sets** tab.
3. `Select` the plus **+** icon at the top right of the screen.
4. `Select` the **Network** field and then `Select` your desired **network** in the list.
5. `Input` your desired account derivation path and then `Select` **Done**.
6. `Select` **Create Derived Key**.
7. Review the message about writing down your Derivation Path and then `Select` the **I have written down my derivation path name** field and then `Select` **Done** and complete the PIN / Biometry confirmation if prompted.