Time Hiding for DayView ??

I am using the calender activeX v12.0.2

I need to hide all the non-working-time cells.
I mean, if my working time is between 10am and 04pm, why should i have to display all the other time cells for the user?
There should be an option to hide those cells.

I managed this by disabling scrolls, then adjusting the HeightFormula due to calendar height, then scrolling to worktime area..
But still, when my timescale is a small value like a 5-minute and my working time is about 8 hours, then time cells appear in a very small height and it all gets messed up. In this case, i need to re-adjust the HeightFormula to a normal value and i need the vertical scroll back again.

Shortly, it is getting harder and harder.

Isn't there any easy way to define a starting time and an ending time, which will provide hiding the needless time rows.

DayView object does not have any property named "TimeScaleMinTime" or "TimeScaleMaxTime".
I think it is something about the library version, i use v12.0.2... Isn't there any equivalent in this version ??

I'm editing an already finished project.
Adding a new form into this project which will use a calendar object.
They used the old version codejock objects in their project.
And they don't have a positive look on upgrading their version.
Isnt there a way of direct messaging to ocx file or global setting or something else.