In addition to the standard reservation rates (Overview - reservation rates), there are also block-based reservation rates. Depending on the duration of the reservation, different blocks are applied.

You can find it here:

/admin/billing/blockbasedtariff/

Two algorithms are available.

Select the cheapest combination

The algorithm combines the available blocks in such a way as to minimize the total amount.

Pay for a started block

“Always use the same block”

The algorithm selects the longest possible block within the reservation and multiplies it as necessary.