Navigate to Systems  Activation Keys, and click Create key.

Create an activation key for the proxy host with SLE Micro 5.5 as the parent channel. This key should include all recommended channels and the proxy as an extension child channel.

Proceed to boostrapping the proxy host as a default client.

Select Systems  Bootstrapping.

Fill in the fields for your proxy host.

Select the activation key created in the previous step from the drop-down.

Click Bootstrap.

Wait for the bootstrap process to complete successfully. Check the Salt menu and confirm the Salt key is listed and accepted.

Reboot the proxy host.

Select the host from the System list and trigger a second reboot after all events are finished to conclude the onboarding.

Select the host from the Systems list and apply all patches to update it.

Reboot the proxy host.