You can place auxiliary elements in the footer: buttons, links, hints.

By default the panel sizes to its content and is never narrower than the field or than panelMinWidth, which is 200px. This can be changed with the panelWidth and panelMinWidth attributes:

<!-- Match the field, but never go below panelMinWidth -->
<kbq-autocomplete panelWidth="auto" />

<!-- An exact width; panelMinWidth is not applied -->
<kbq-autocomplete [panelWidth]="400" />

<!-- Any CSS value works, e.g. shrink to fit the options -->
<kbq-autocomplete panelWidth="fit-content" />

<!-- Widen the default lower bound -->
<kbq-autocomplete [panelMinWidth]="350" />

<!-- Let the panel grow further with its content; the default cap is 640px -->
<kbq-autocomplete [panelMaxWidth]="800" />

Growth by content stops at 640px. The cap is soft — it never makes the panel narrower than the field, and never clamps an explicit panelWidth. Change it globally through the --kbq-panel-size-width-max token, which is shared with select, tree-select and dropdown.

The same attributes apply when the autocomplete is attached to a tag input, where the panel is measured against the whole field rather than the input.