Combining two Depth Maps in the Color Page

I tried to combine two depth maps in the node panel of the color page.

Configuration:
1. Serial with Depth Map 1 Near
2. Serial with Depth Map 2 Far

I try to use a Parallel Mixer Node, but cannot access the Inspector to configure the Parallel Mixer node to combine the two keys. In the the Workspace menu under Active Panel Selection the Inspector command-9 is grayed out. I can't find the solution to activate the Inspector. Is this a possible bug?

Thanks for any help.

Have a good day and happy grading.

Use a key mixer node to combine keys.

Use a key mixer node to combine keys.

Good afternoon!

Thank you very much for this hint. I tried to add the key mixer with right clicking one of the keyed nodes. Therefore it didn't work. It was no key mixer node in the context menu available. Then I clicked on the empty node canvas an then I saw the key mixer node. Sorry, my fault.

Thanks again and a nice day.