security.applicationAddUser 
Adds a user to an application.
js
security.applicationAddUser(applicationId, userId, tags)Parameters 
- applicationId- Identifier of the activity.
- userId- Identifier of the user (Integer).
- tags- Tags that should be set (Comma delimited string).
Example 
js
let arr = security.applicationAddUser("MyActivityId", 1, "Admin, All Scenarios");