> ## Documentation Index > Fetch the complete documentation index at: https://docs.getrivet.ca/llms.txt > Use this file to discover all available pages before exploring further. # Letting your client draw on the canvas > Flip Two-way ON and your client gets a pen, text, and undo. Flip it OFF and they're back to watching. By default, the whiteboard is yours — you draw, the client watches. When you want them to participate (mark where they feel anxiety in a body diagram, add their own evidence to a thought record, sketch their family map), flip **Two-way ON** and their pointer becomes a pen. It's a deliberate toggle, not always-on collaboration. You stay in control of when the client is drawing and when they're watching, because most clinical moments call for one or the other — rarely both at once. ## The Two-way toggle The toggle sits at the bottom-center of the whiteboard, labelled **Two-way: OFF** when collaboration is off. Tap it. * The label flips to **Two-way: ON** with a green indicator (the same green you'll recognize from the "client has control" cue in EMDR). * Your client immediately sees a small toolbar appear on their end with a pen, color picker, text tool, and undo button. * Their cursor turns into a drawing cursor over the canvas. Tap it again to flip OFF — their toolbar disappears, their cursor goes back to a normal arrow, and any strokes they've made stay on your canvas. Toggling OFF doesn't delete the client's marks. It just stops them from adding more. Use **Clear client marks** (appears beside the toggle when Two-way is ON) to wipe everything they drew this session. ## What the client can do (and what they can't) The client's tools are deliberately minimal. They're annotating your canvas, not co-editing the worksheet itself. **They can:** * Draw with a pen, choosing from 5 colors picked to read well on a clinical canvas. * Type text — tap anywhere, type, press Enter to commit. * Undo their own last mark. * Use Apple Pencil pressure if they're on iPad. **They can't:** * Move, resize, or recolor the elements you placed (preset boxes, your text, your shapes). * Delete anything you drew. * Drop a preset, drop a sticky note, or open the worksheets library. * Erase. Their tools are pen and text only. The boundary keeps clinical authorship clear. The presets, the formulation, the diagram shape stay yours; the client's marks ride on top as annotations you can see and incorporate. ## Cursor pills When Two-way is ON, you can see your client's pointer position on your canvas as a small dot with their name beside it. They can see yours the same way. This matters more than it sounds — when you're explaining something and they're following along silently, the cursor tells you they're on the right part of the diagram. The cursors update about ten times a second, smooth enough to feel live without flooding the connection. ## Clearing client marks before export A common pattern: you and your client co-build a diagram during the session. You want to keep the structure but not their handwritten exploratory notes (or vice versa). When Two-way is ON, a **Clear client marks** button appears beside the toggle. Tap it. * Every stroke and text element your client added this session disappears from the canvas. * Your own elements stay exactly where they were. * The client's overlay also clears on their end — they're back to a clean canvas with just your content visible. This is reversible only by undoing — there's no "restore client marks" button. Use it once you've decided what to keep. If you want to keep the client's marks in the export but not on the canvas going forward, export to PDF first, then Clear client marks. The PDF captures the canvas as it stood at the moment of export. ## Native viewing If your client is on an iPhone or Android, they see the whiteboard as a video stream — they can watch you draw, but the drawing toolbar doesn't appear on their end. Two-way collaboration is designed for clients on a laptop, desktop, or iPad. Most clients are; for the ones who aren't, they still get the visual you're showing them. ## When to use Two-way Most of a session, you'll be the only one drawing. Two-way fits the specific moments when the client adding to the canvas is part of the clinical work: * **Thought record** — they fill in their own automatic thoughts. * **Evidence for/against** — they add the evidence rather than you transcribing. * **Body diagram / trigger map** — they mark where they feel something. * **Genogram or family map** — they label the relationships. * **Stages of change** — they place themselves on the line. For psychoeducation (window of tolerance, polyvagal ladder, upstairs brain), you typically stay in single-author mode — those diagrams land better when one person draws and the other watches. ## Related articles Your toolbar, pen, shapes. Six color quick-drop. Save the result.