Rule of thumb.
a. First analyze and group the time-period for which you want the partition to be active. This could be business hours (M-F, 8-5 for say).
b. If the time slots cannot be grouped into one time period, define multiple time periods.
c. Group all timeperiods into one time schedule.
d. apply time schedule to partitions and partitions to CSS.
e. calling devices should use this CSS (Gateways/ phones etc)
f. Note that when you want differential call treatment based on ToD, you need to create a tie on the dialed number. To create the tie, you have to define the same number (say 1005) twice one in each partition P1 and P2. P1 may be a TOD enabled partition, while P2 may be a normal partition. P1 will be listed above P2 in the calling device CSS.