Definitions:
a plan for carrying out a process or procedure, giving lists of intended events and times

an appendix to a formal document or statute, especially as a list, table, or inventory

(with reference to the british system of income tax) any of the forms (named ‘a’, ‘b’, etc.) issued for completion and relating to the various classes into which taxable income is divided.

arrange or plan (an event) to take place at a particular time

include (a building or site) in a list for legal preservation or protection