Schedule When to Index a Dataset
You can schedule when and how often a dataset is indexed. You can choose to index the dataset at a time that is convenient for and doesn't interrupt or confuse workbook authors or consumers.
By default when indexing is enabled for a dataset, the dataset is indexed when it's refreshed. Setting an indexing schedule overrides this default. You can enable indexing for any datasets that you have Full Control or Read-Write access to. 
               For information about enabling and setting up a dataset for indexing, see Index a Dataset.
               
               - On the Home page, click Navigator, and then click Data.
 - Click the Datasets tab.
 - Locate the dataset that you want to add an indexing schedule to, click Actions, and then click Inspect.
 - Click the Search tab.
 - In the Indexing Schedule section, click Start and then click the Select Date Time button. 
 - In the dropdown calendar, browse to and select a month and day. At the bottom of the dropdown calendar, click the time stamp and specify what time you want indexing to run.
 - Go to the Repeat every field, enter a number. Click the dropdown and select how often you want the schedule to run.
 - Click Save.
 
