Benefices, Collation of
The giving of a vacant benefice to one canonically fit by competent ecclesiastical authority, with due respect to an acquired right of presentation, election, etc.
The pope can confer any benefice in the universal Church.
The bishop enjoys the same right within his own diocese, but his vicar general does not.
While the see is vacant, he who rules the diocese can confer those benefices for which one has been presented or elected, but not those which are of free collation.
New Catholic Dictionary