Recently a question came up, on how to create elevators with higher capacities (like 32 passengers) than suggested in the solution suggestor drop down list.
When you create your elevator please choose the largest capacity, like 20 passengers:
Complete the create process.
In the “Compare vendors” dialog, expand the “Requirements” and change the number of passengers.
Note that you can type in any number while the drop down list suggest only the small sizes. Click “TAB” to leave the field.
Finally choose one vendor that supports the required size ( like Schindler 2600) and refresh your drawing by clicking “Create or Update in Revit”