Real Dictionary

assign
If someone is assigned to a particular place, group, or person, they are sent there, usually in order to work at that place or for that person.
verb: If you assign a particular function or value to someone or something, you say they have it.
verb: If you assign a piece of work to someone, you give them the work to do.
verb: If you assign something to someone, you say that it is for their use.

assign in American English
to set apart or mark for a specific purpose; designate
intransitive verb: to transfer property, esp. in trust or for the benefit of creditors
noun: a person to whom the property or interest of another is or may be transferred; assignee
transitive verb: to give or allocate; allot

assign in British English
to select for and appoint to a post, etc
noun: a person to whom property is assigned; assignee