InlineDateField, how to show only some houres and minutes for user

I have InlineDateField with Resolution.MINUTE.
When user wants to select minutes, it is displayed menu from 0 to 59 minutes.
I want to show him the only 0, 5, 10, 15 etc minutes, ie intervals.
And I need only hours from 8 to 20
Here’s how to do it? :slight_smile:
sorry for my english :slight_smile:

it’s ok