A Shared Section can help you maintain one set of buttons in a single place and reuse it everywhere it's needed: every position that uses it updates automatically whenever you edit the shared master, instead of needing the same change repeated by hand in every position that uses it.
Open Shared Sections: select Position in the main menu, then Shared.
Select Create.
Enter a Label.
Set Size: width and height, from 1 up to 48 cells each.
Select Create.
Build the section's canvas the same way you'd build any other set of controls: add buttons manually or from connection presets. Select Apply to save the master.
Open the position and select the canvas cells where the shared section should go.
Right-click the selection, then choose Shared Section.
Under Insert existing, point at a shared section to see a live preview of its contents, then select it. It's placed straight away. The same dialog also offers Create New Master.
The selected cells don't need to exactly match the shared section's own configured size: Buttons places the master's content into whatever area you selected, without resizing either the container or the content to match. For a clean result, select an area the same size as the shared section; a mismatched selection won't produce an error, but the layout may look cramped or leave empty space.
You can place the same Shared Section as many times as you want, in one position or across several. A placed instance shows the master's buttons; the cells the master leaves empty are shown hatched.
Select a placed instance to reveal Edit Shared Section in its section bar: this jumps straight to editing the master, rather than making you find it separately under Shared Sections. While you edit the master this way, Go back to position in the bottom-left corner returns you to the position you came from.
Warning
Editing the master shared section updates every position that uses it, immediately and without a confirmation step. Confirm you're editing the master you intend before making changes you're not ready to see everywhere at once.
A Shared Section placed in a position uses that position's own Position Variables, not a separate scope of its own. This is what lets the same shared section reflect different values depending on which position it's currently placed in, such as a Position Variable holding a connection that changes which device the shared section's buttons actually control.
A shared section looks cramped or leaves empty space after placing it.
Select an area matching the shared section's own configured size before placing it.
You edited a shared section and don't see the change somewhere you expected.
Confirm you edited the master (via Edit Shared Section or Shared Sections directly), not a copy: a Shared Section instance has no independent content of its own.
A placed shared section shows a lock icon and No Access.
This can mean the underlying shared section was deleted. Check Shared Sections to confirm it still exists; if it doesn't, replace the instance with a working shared section or rebuild the controls directly.