Android Question Migrating from VB Ent Ed to B4A


What is the best practice in B4A when making multiple Activities / Panels (vb6 frames and panels) in a single Activity?

IE: Where multiple tasks and data can be showed an manipulated in a vb6 form on a panel or frame. For example a form may have 4 frames one with data manipulation properties and another ma have the query results.

I have noticed the b4x panel is capable of loading an "Activity" into the frame region and operates as a normal form would.

Would you design many panels and set visible to false?
Would you design many Activities and load as required?
How many can you load simultaneously ? (into seperate "Panel" objects)
What is the life cycle of the loaded Activities into the Panel(s) ?