The quick filters bar already lets you decide who may change a dashboard's filters. Locks let you decide which filters they may change. A bar editor can lock any single filter button, or the date range, to its saved value; everyone else keeps changing the other filters exactly as before. That turns the bar's permission ladder into filter-level permissions: a per-site dashboard whose site is fixed but whose channel and priority are free, or a live wallboard whose date range nobody can drift off.

This guide covers locking and unlocking, what a locked filter looks like at each permission level, and how locks interact with saved defaults and per-tab bars. Setting a bar up in the first place is covered in Quick Filters Bar on Dashboards: Setup, Permissions, and Daily Use, and renaming, colouring and reordering the buttons in Customizing the Quick Filters Bar: Filter Buttons and Per-Tab Bars.

Bar permissions are granted per dashboard, per user or user group, on Manage Users Access To Dashboard. The Quick Filters Bar Permissions block has four levels, and each one includes the ones before it:

A lock is the Edit tier reaching down into the Change and Save tiers: it says "this one value is not yours to change, whatever your level lets you do with the rest". Only an Edit-tier user can put a lock on or take it off, and while a filter is locked nobody, editors included, can change its value.

Put the dashboard into edit mode with the Edit button, or open the gear menu at the right end of the bar and tick Edit filter buttons if you can shape the bar but not the dashboard. Every filter button grows its editing controls, and among them is a padlock toggle. The date range has its own padlock, just to the right of the date button.

Click the padlock to lock that filter at its saved value. The tooltip on the toggle says what is about to happen: Lock this filter's value. Only filters bar editors can unlock it. Click again to unlock. The toggle reads as pressed while the filter is locked.

For a user at the Change or Save tier, a locked button shows a small lock icon where its chevron would be, and it does not open. The buttons around it open and apply as normal. Hovering the count on a locked button still lists the values it is filtered to, so people can always tell what a dashboard is scoped to even when they cannot change it.

Two audiences see no difference at all:

The Enabled toggle at the right of the bar, which switches the whole bar off for your session, is now shown only to bar editors. For everyone else the bar's filters always apply, so a lock cannot be sidestepped by disabling the bar.

The editor flow is unlock → change → Save as Default → relock. Unlock the filter in edit mode, pick the new value, save it as the default so everyone starts from it, then lock it again. The date range unlocks in place, so an editor can change it without reloading the page.

The lock is enforced when a save is made, not just drawn on the screen. Every route that writes a bar's saved values, including the in-app Save as Default, Save for this tab only and the User Access API, checks the locked filters first, and a save that would change a locked value is refused as a whole. Resending the current value is fine, so saving the other filters on the bar always works.

If someone locked a filter while you had the page open, your next save of that filter is refused with a message naming it: Channel was locked by a filters bar editor, so that change was not saved. The button flips to its locked look, that one change is reverted, and any other unsaved changes you made are kept.

On a dashboard with tabs, a single tab can have its own filters bar. A tab bar created from the default bar copies its locks, so a locked site stays locked on every tab. Save for this tab only is checked against the locks too: a tab save that would change a locked value is refused, and no tab bar is created. Tab-level access is covered in Customizing the Quick Filters Bar.

One surface cannot lock the date: a World Heat Map's bar has no date button, so there is nothing to lock there. Its filter buttons lock the same way as a dashboard's.

Everything else about the bar stays configurable alongside locks: up to six filter buttons plus the date, saved filter sets as a single button, renamed and coloured buttons, drag-to-reorder, per-tab bars, and the four-level permission ladder per user or group.