currently teamdesk supports one to many and many to many relations.
If a new value is needed in the choices for a many-many relation, the process is not very intuative and rather 'click heavy' (e.g. using 'type in with search button', dont find a match, click magnifier, press new, press save)
It would be nice if new values could be created more easily 'on the fly' to apply in a many to many relationship. Ideally similar like 'tags' are added in some applications without having to navigate away from the field.