> For the complete documentation index, see [llms.txt](https://support.caspen.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.caspen.com/using-caspen/catalog/activities/activity-categories.md).
# Activity categories
Learn how to add categories for activities in Caspen.
## How to add a category
1. Go to **Catalog** → **Activities** tab.
2. Click **Add category**.
3. Enter the details**,** then click **Create**.
***
### Category field reference
| Field | Description |
| -------------- | --------------------------------------------------------------------------------------------------------------------- |
| Name |
The category name shown in lists and menus.
Examples: Reports, Case Notes, Admin, Communications.
|
| Calendar color | The color activities in this category use on the calendar. |
| Description | Internal note about how this category is used. |
***
### How calendar colours work
**How it works**
* Activities inherit their category color in the calendar.
* If you change a category’s color later, all activities in that category update to the new color.
**Why it helps**\
Color coding makes it faster to scan lists and the calendar. Use distinct colors for each activity category (for example: Non-clinical tasks = yellow).
**Example: set a category color**\
**Actions → Edit category → Calendar color → select yellow → Save.**
**Where you’ll see it**
* **Activities list:** Activities in the **Non-clinical tasks** category show in yellow.
* **Calendar:** Those activities appear in yellow on the calendar.
Activities list using the Non-clinical category color (yellow).
Calendar event using the Non-clinical category color (yellow).
***
## Edit an activity category
1. Go to **Catalog** → **Activities**.
2. Find the category, then click **Actions** → **Edit category**.
3. Update the **Name**, **Calendar color**, or **Description**, then click **Save**.
***
## Archive an activity category
{% hint style="info" %}
**Note:** You can only archive an empty category. Reassign or archive its activities first.
{% endhint %}
1. Go to **Catalog** → **Activities**.
2. Find the category, click **Actions** → **Archive category**.
It is now removed from the Activities list.
