In the field settings, set the checkbox Paid. Specify the price.
Then set the Price for each rental interval checkbox.
Now the specified price will be multiplied by the number of intervals, for example, the number of hours booked.
Example: 'Monitor', $100 day.
Check the results.
Book a coworking with two monitors for $100 a day for three days:
2 * 100 * 3 = $600.
Look in action.