Time entry rule to prevent entry of night hours and weekends

Content

Hi,

we need to ensure that users create time entries only within defined working hours. So for example they will be able to enter time during 6am-10pm and only Monday to Friday. They should not be able to enter night hours and weekends.

But these hours doesn't correspond exactly to work schedule, because work schedule can be for example 8 - 16, but users should be able to create time for example 6 - 14, but not for example 18-23, because this entry contains time after 22.

What is the easiest way how to configure the time entry rule? Is there any template i can use for example?