Resolve and Fusion use the iNodes OFX plugin. The plugin brings the nodes, and each software's card adds the link that brings your results back into it.
Find the nodes
Look for iNodes in the list of OpenFX nodes. They're sorted by category, then by model family.
In the Fusion page, the fastest way is Shift + Space: the Select Tool window opens, type a few letters of the model, then pick it from the list.
Where your results land
The result shows right in the iNodes node: wire its output into MediaOut, like any node. In Resolve, it's also filed in the Media Pool, in an iNodes AI folder, like any other media.
The Skip import generation checkboxes decide whether it also arrives as a MediaIn node:
- unticked: a MediaIn node is added under the iNodes node, on top of the result shown in the node;
- ticked: only the iNodes node shows the result. This node applies to this node, Global to all of them.
Everything else
The buttons are the same everywhere: see Anatomy of a node.