Where required it is possible to define a group for the 'To', 'CC', 'Bcc' field in the email integration
The Email form will accept both valid user email tokens or User Group Ids, returning a maximum of 100 emails (see note below re SMTP capacity)
Example 1
Either valid/default Email token (s) and/or User Group Ids can be used in the relevant To/CC/BCC field. The token/group Ids must be comma separated (without any comma after the last entry).
In example below, {assigned_user_id} is token and it will return the email address of logged in user along with all the emails in the user group defined

Example 2
{assigned_users_in_group} is a field data name and not a valid default / global token - where this group is required then it is necessary to use the "User Group ID" - e.g. USERGROUP-75a88746-9a8c-4df9-8d11-1cd989988ef1

so the above scenario will not work - and should be adjusted to
- {assigned_user_id},USERGROUP-75a88746-9a8c-4df9-8d11-1cd989988ef1
Note:
- Lists of "User Group ID" must be comma separated except for last entry.
- You can get the User Group ID from Permission Manager > User Group

- Make sure you test the capacity of your SMTP server before using this feature. ( we have encountered capacity issues where we used 2 groups - 1st with 100 emails and 2nd with 50 emails )
So 'To'/'CC'/'Bcc' field could have entries in combination of formats as below:
- USERGROUP-75a88746-9a8c-4df9-8d11-1cd989988ef1,USERGROUP-75a88746-9a8c-4df9-8d11-1cd989988gt1
- {assigned_user_id},USERGROUP-75a88746-9a8c-4df9-8d11-1cd989988ef1