Collaboration meaning: I'd like to know

I'd like to know more about the advantages and disadvantages of forking a github project vs. creating a branch of a github project. Forking makes my version of the project more isolated from the Sequence diagram describes a set of interactions sequences. opt fragment in diagram means that the diagram describes two possible interactions sequences - one with the interaction in the opt fragment and another without this interaction. The condition that describes may range from some deterministic calculation (2+2==4) to user choice (red pill selected) to random event (atom decays). It's up to diagram author what the intention is. I'm designing an app which needs to have some collaboration functionality. So 1 to many users can edit certain attributes of an event they plan together. e.g. the main-admin can change the title, picture etc. while all admin-users could change the date for example. The collaboration branch is different also from the others for being able to call ADF pipelines from logic apps or anything else external to ADF (after using the publish button).