Roster Assignment (a.k.a Update Roster) function is for supervisor to amend his/her direct subordinate's Rosters (e.g. at a remote site). Where direct subordinates is the employees that the Report to (Superior) is the supervisor.
To turn on Roster Assignment, go to Employee Portal Setup, Employee Self Service tab, check Enable "Roster Assignment"
Roster Assignment will only be displayed for EPortal User that the check-box option Show "Roster Assignment" (in Employee Master, EPortal tab) is checked.
The Roster Codes displayed on this screen is the Roster Codes of his/her subordinates (i.e. the employee's Report To (Supervisor) is this user).
p.s. If the check-box option Roster Assignment including Self in Employee Portal Setup, General tab is turned on, the roster tables available to update in Roster Assignment in Employee Portal will include the Roster of the logged in user.
If the option Assumed one Employee one Roster in Company Setup, General tab is turned on, the leave type of the Approved Leave of this employee will show on the table in red in order to assign the proper shift code.