Recurring daily appointments are good for when the service is so enormous it stretches out a couple days. 

From the customer's location page, click the Create a new... button and select Work Order

On the Billing tab add the service description, adjust the price, if necessary, etc.

On the Schedule tab, select the tech.

Select the frequency Daily.

If this is to be a daily service, keep Every 1 Day(s). If it's to be every other day, change it to Every 2 Day(s), and so forth.

If it is to end after a certain number of days, for Ends After, click Never and select Fixed number. 

Enter the number of days. If this is a two-day project, enter 2. Three days, 3, etc.

Enter the First service date, Duration and Start Time. 

Click the Save button and you have a series created in that customer's Work Orders tab. This example shows a daily series starting on July 30 at 2:30 PM and ending on July 31.

See these articles for creating other Work Order frequencies:
​How to create an Annual Work Order Series
​How to create a Seasonal Work Order Series
​How to create a Semi-Annual Work Order Series
​How to create a Tri-Annual Work Order Series
​How to create a Quarterly Work Order Series
​How to create a Bi-Monthly Work Order Series
​How to create a Monthly Work Order Series
​How to create a Weekly Work Order Series