Below are the exact step‑by‑step instructions from the Flux documentation you can follow to finish routing, pours, and the isolation keep‑outs.

Routing traces (start/finish, change angle, cancel) This is the most relevant entry I found related to the topic. “To connect parts, hover over a part to reveal its terminals, then click on the white dots to begin routing mode. You don't need any tools. simply click where on the white dot to start wiring. To complete the connection, click on the terminal of the other element. Connecting parts While in wiring mode, you can also change the wire angle (elbow) direction of the route by pressing the “f” key. To cancel the routing mode, press the escape key.” Source

Create and edit copper polygons (pours) This is the most relevant entry I found related to the topic. “Creating a Polygon To create a polygon in Flux: Hover over a pad in your PCB design Right-click to open the context menu Navigate to Start Routing Polygon Click on the canvas to place points for your polygon Shift while placing points to enable free-angle mode (otherwise points snap to 45° angles) Right-click to remove the last point To complete the polygon, either: Click on the middle of the pad you started from, or Double-click anywhere else on the canvas

Editing Polygons Once you've created a polygon, you can edit its shape: Select the polygon in your design Double-click on the polygon to enter edit mode In edit mode, you can: Click and drag existing points to move them Double-click on a point to delete it Hover near an edge to reveal midpoints that can be clicked to add new points Click on the "Finish Editing" toolbar” Source

Add Keep Out rules (for the isolation corridor and pour clearance) This is the most relevant entry I found related to the topic. “Example 1: Creating a Keep Out rule between a specific pad and all other objects.

Example 2: One of the most common use cases for this rule is to set the distance between a net and copper fill or a polygon. Keep-out rules can now be applied directly to nets, making it easier to manage clearances.” Source

Make multi‑layer copper cutouts for the corridor This is the most relevant entry I found related to the topic. “Keep Out Rule In the case where you’d like to create a copper cutout around a pre-existing element simply add a Keep Out rule. This will push the auto-generated copper planes away from the part at the distance specified. The keep out rule will only be applied to the layer where the object exists. To create multi-layer cutouts, you'll need to use a zone.

Optional: learn routing across layers This is the most relevant entry I found related to the topic. “Flux supports multi-layer designs. In this tutorial, we'll cover: Configuring the board stack-up Moving objects between layers Routing across multiple layers” Source

If you want more, you can browse the Flux Documentation or search all docs: