Although we did our best to make Agent as intuitive as possible, we get questions from time to time. By far the most usual question is how to exchange the keys of the bottom row.
Let's say you want to exchange Alt and Fn.
Now select the base layer of your default keymap in Agent. You should see something like this:
The important thing to understand is that each key has an associated action. Let's click on Alt.
A popover appears that contains the type and properties of the action. The Keypress tab is active so this is a keypress action (type) featuring no scancode and the left Alt modifier (properties).
Now let's see the action of the Fn key by clicking on it.
Now the Layer tab is active which means that it's a layer switch action which activates the Fn layer while holding this key.
You simply have to exchange the actions of the Alt and Fn keys by clicking on them and setting their action type and properties. Make sure to check the "Remap on all layers" checkbox for modifier keys before clicking on the "Remap key" button.
Lastly, click on the "Save to keyboard" button in the bottom right corner.
That's about it! Happy remapping!