The days available in the calendar represent the amount of days the debtor will remain in this current procedure step. If you wish to expand the number of days in your calendar, you can adjust the D.I.P. (Days In Procedure) of the debtor to delay the next procedure step.
E.g. in the example below (5th of August), you can only reschedule a call until the 9th of August. This means this specific debtor will automatically move to a next procedure step in 5 days.
View our related article: How do I change the D.I.P. of an invoice?