# Enable optional features

Optional features can be enabled or disabled by editing the configuration of the Rule Editor widget within your [Rules Workshop application](../workshop-application/index.md), as shown in the screenshot below.

![Optional Features Configuration](../../../assets/17efb52dc9777f4f30a417fb1004a3935e48fdf6b29097599556720c1d82d95a.webp)

There are a range of optional logic boards that can be enabled or disabled for Foundry Rules:

* **Window board:** Supports [Window functions ↗](https://spark.apache.org/docs/latest/sql-ref-syntax-qry-select-window.html).
* **Aggregation board:** Computes aggregates over grouped columns.
* **Join board:** Joins additional datasets or objects.
* **Expression board:** Executes arbitrary expressions for adding columns or filtering.
* **Select columns board:** Selects a subset of columns to carry forward to the next logic board.
* **Union board:** Unions additional datasets or objects.

Additionally, there is an option to enable or disable importing rules from Contour.

* **Contour import:** Imports and converts logic stored in a [Contour analysis](../../contour/core-concepts/index.md) to a rule.

Finally, Foundry Rules supports writing rules directly on top of time series data.

* **Time series:** Add [time series boards](../timeseries-concepts/index.md#add-timeseries-board) which can manipulate time series directly as part of a rule.