Knowledge of DIWE class setup routines. An hour a week for miscellaneous site management. This work may not be required every week, but the Administrator should be prepared for such time demands. As frequently as every week. The amount of time it will take to make changes and corrections at your site will depend upon the situation you encounter.
Most basic calls take fifteen to thirty minutes to complete.
More complicated calls may take an hour or two of the Administrator's time, and may be spread over more than one day.