How to get started with PenPot - some basic questions... - regarding collaboration and idea exchange

well i am doing my very very firts steps in Penpot - and i try to digg into all these nice things and options.

one question - can i store this thing and besides this step ( of storing a image)
can i invite friends to

a. discuss
b. add their ideas etc. etx
c. add other parts to the image - and comments

is this possible #

see here the demo;: - sorry this is truley poor poor desingne i am not alowed to post a link
what poor design

hopeyou can help me anyway

ook forward to hear from you