custom block

how can i create a Custom Block

AP >>> Modules >>> Portal pages management >>> Structure >>> Create a custom block

the problm is that i can't find Portal pages management >>> Structure

you must go to modules and left block you must see Portal pages management ...

I've created my custom block (I think) but it's not showing. Any ideas on what I might be doing wrong? I'm trying to put a welcome gif in there.

You must add this new custom block at Addition/Deletion of personal modules (you must pick your block from the list and locate it in the right section (header, column, footer)).