Edit activity type groups
For any existing activity type group, you can change the following settings:
The activity type group's name
The Timeline Color setting
Which attributes are attached, and which are set as required
Edit an existing activity type group
In the
Activities section, click
Settings:

In the Activity Configuration menu, click Activities > Types & Groups.
In the list panel on the left, click on the activity type group you want to edit. The selected group's settings are shown in the settings panel on the right.
Make changes to the group's settings as needed.
Optional: Make changes to the activity type group's attributes on the Attached attributes tab:
For any attached attribute, select or deselect the Required option to change whether the attribute is mandatory.
Click
Detach Attribute to remove an attribute from the activity type group.
All changes are saved automatically, and take effect immediately.