Definition of roster:
(n) :
a
list of
names, usually for an organisation of some kind such as
military officers and
enlisted
personnel enrolled in a particular
unit; a
muster roll; or a sports team, with the names of players who are eligible to be placed in the lineup for a particular game; a list of the
jobs to be done by
members of an organisation and often with the date/time that they are expected to do them
"the secretary has produced a new cleaning roster for the Church over the remainder of the year."
(v) :
the act of placing a name on a roster
"I have rostered you for cleaning duties on the first Monday of each month."