How to change the size of a box?

Hi Tuan.

I hope you are well.

At the moment I have 31 categories. So every time when I want to input a new event, I must scrol down in Event Category to find the right category of my event.
How or Where I can change the box size of this parament? Now show only the first 5 categories. size="5"
If I can make it to show all categories, (size="35") I will saving about 2 minites in every new entry.

Seems you are using old version of the extension. So the file should be administrator/components/com_eventbooking/views/event/view.html.php

Look at that file, you should see the code and change size from 5 to 35

Tuan

Thanks Tuan.