Acronis Recovery for Microsoft Exchange - User Guide - Manual (Page 70)

One time - the task will be executed once at the specified time and day. You can set
the Start time parameter: specify the date and time to start the operation. Current
time is set by default.
All the settings you made are displayed in the Result field at the bottom of the
window.
To save your settings, click OK.
To quit task scheduling without saving, click Cancel.
Note, Acronis Recovery for MS Exchange allows you to set multiple schedules for one
task. For example, you can backup your data not only once a week, but also on the
last day of each month. You can specify Weekly and Monthly parameters to have the
necessary operation schedule.
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