You will not find the second field in the panel
The KolayBi setup has two required fields, and they come from different places. You generate the API key yourself under settings → profile account → API keys. The channel value you cannot generate — it has to be requested from KolayBi support. Scanning the panel end to end without finding this field is normal; its absence is by design.
Sending that request up front speeds things up when planning the setup, because the waiting time is not under your control. If you will work against the test environment, factor in that its credentials are separate from production.