Depending on the render mode you are using, you can modify the method vLayout():
after the assignment of m_scale_min, multiply m_scale_min for a positive <1 factor (depending on the level of "zoom-out" you want).
m_scale_min *= 0.8;
It is for Android.
Could you please check what version you're using, and what type of license?
If it is Professional of Premium, you can download the source code from your panel. If it is one of the more recent versions, source files are included.
When you have access to the source code, you can find the classes to edit in ViewLib\src\main\java\com\radaee\view