Maybe you’ll have a better understanding of this schema if you’re looking at the complete one on this page: Capella MBSE Tool - Arcadia
A1/A2/A3 are Operational Activities
F1…Fx are System Functions
C1…Cx are Logical Components…
Also you should start by watching this video: The spirit of Arcadia and Capella in 7 minutes - YouTube and then look at the training content here: Capella MBSE Tool - Training Material
OK… So just to confirm: Ax, Fx, Cx are blocks which you select in each layer (actually, selected in Palette window) to add in the scheme, aren’t them?
Thanks for the references and thank you so much for all your comments, Stephane.
I would say Yes.