Can I have fixed time slots?

Yes, you can configure slots with any kind of recurrent intervals.

To do this, use the resource type - Event. In the rules of of work, click Configure time. And add the required number of period slots.

If there are a lot of slots, add several periods at once and set the desired recurrence.

As a result, after choosing a day, the client will be shown time slots to choose from.

If the event is multi-day, then the slots will show the time and number of days.

In the resource settings you will find additional settings for slots:

• List of month events
• Show rule names under time slots
• Colorize time slots with rule color
• Hide end date
• Show number of shares left

Here is a live demo: