# selectConstraint

Limits user selection to certain windows of time.

<div class='spec'>

a groupId for [Events](event-object.md), `"businessHours"`, object

</div>

This value behaves identically to the way [eventConstraint](eventConstraint.md) limits where events can go. It accepts the same values.

Only applicable when the [selectable](selectable.md) option is activated.