Dahua DH-XVR54 L-I2 Series User Manual page 302

Setting Permitted Period
Next to Period, click Setting.
Define the permitted period. By default, it is active all the time.
Define the period by drawing.

 Define for a specified day of a week: On the timeline, click the half-hour blocks to
 Define for several days of a week: Click
 Define for all days of a week: Click All, all the
Define the period by editing. Take Sunday as an example.

1) Click
select the active period.
. On the timeline of any selected day, click the half-hour blocks to select the active
periods, all the days with
of any day, click the half-hour blocks to select the active periods, all the days will take
the same settings.
.
Setting
before each day, the icon switches to
will take the same settings.
switches to
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User's Manual
. On the timeline