Group Link

ComfyUI lets you draw boxes around your nodes, but a group is just a rectangle with a title - it doesn't do anything on its own. Group Link is the node that makes a group switchable. You point it at two of your groups, hit a single ON/OFF toggle, and every node inside both of them turns on or off together. Nothing is deleted, nothing is rewired; the two blocks just stop executing and come back when you flip the switch. It's the "fast groups mute" idea from rgthree's pack, cut down to its simplest single-purpose form.

How it works

The node has no inputs and no outputs - check its schema and it's empty, because all of it is front-end. The Python class is a literal noop. The real behavior lives in web/js/fast_group_link.js: on creation it scans the graph for group titles and builds two dropdowns, "Master Group" and "Slave Group". The toggle then sets every node inside both groups to ALWAYS or NEVER mode - ComfyUI's way of saying "run this" or "never run this". Nodes in NEVER mode don't execute at all, so this is effectively hiding a whole stage of the pipeline, not bypassing it with pass-through data.

Using it

Using it is three steps:

1. Draw the groups first (right-click the canvas → Group). Drop the node in and pick your two groups from the dropdowns.
2. Flip the switch. Green ON = both groups execute; red OFF = both are muted.
3. That's it. Collapse it to a small bar if it's in the way.

Where people get burned

Where people get burned:

• The toggle starts OFF. The moment you select a group in either dropdown, that group goes muted until you flip the switch. If your workflow suddenly produces nothing after you add this node, this is why.
• The dropdowns are populated when the node is created. Add a new group afterwards and it won't appear in the list until you reload the page.
• Because it's a JS-only node, it depends on ComfyUI's front-end loading the extension. If the web side fails, you get an empty box with no controls at all.
• Muting is blunt: it hits every node in both groups, not individual ones.

When to reach for it

If you already run rgthree-comfy, its Fast Groups Muter does strictly more - a dashboard with per-group toggles plus a bypass mode. Group Link is worth reaching for when you have exactly two groups that always switch together and you want one click for both, without installing a heavier pack for it.

Install

Install is the same as the rest of the Finetuners suite - no dependencies beyond what ComfyUI already ships, no models to download:

cd ComfyUI/custom_nodes
git clone https://github.com/FinetunersAI/ComfyUI_Finetuners_Suite

Restart ComfyUI and it appears under the "finetuners" category. One trap: the README's own install command points at FinetunersAI/finetunersTest.git - a stale name from the author's testing. Clone the Suite repo above (that's what ComfyUI Manager installs when you search "ComfyUI_Finetuners_Suite"); use the README command verbatim and you'll get a different, likely dead repo. You'll know the pack loaded when the console prints a blue "ComfyUI Finetuners: Loaded".

It's a control surface, not a data node - you configure it once and forget it exists. That's the point: one click where you used to reach for three.