You can limit the hours shown in the calendar, choose the hour an empty day opens at, and hide employees without a schedule.
Step 1 — Open the time settings
Go to Settings, tap Interface & Language Settings, then Time and schedule settings.
Step 2 — Show only employees with a schedule
Check Show only employees with a schedule if you want the calendar to show only the employees who have a schedule defined.
Step 3 — Set the displayed interval
Under Hours shown in the agenda, tap the from hour (the start of the day) and the to hour (the end of the day). Hours outside this interval no longer appear in the calendar.
Step 4 — Choose the start hour
Under Start time: you choose the hour the calendar positions itself at when you open an empty day.
Step 5 — Save
Tap Save. The button becomes active only after you change something.
Optional: if the end hour lands before the start hour, saving is blocked until you fix the interval.