If there are no discontinuities between the time slots in the work rule, the rule is glued together.
Suppose that we have such periods of work:
As a result, they will all unite in one big period:
If you want to divide this time, create another rule of work and enter even periods into it.
In the old rule, leave the odd ones.
We also recommend changing the color of the second rule so that the borders are visible.
Now time has been divided into intervals: