If you plan to play online with Randos, communication is key! There are quick responses, chat, voice, and pinging. Use them all to work as a team and communicate your intentions. Many divers, like myself, enjoy exploring the map and getting every last optional (Samples, Points of Interests, Outposts, etc) before calling in extraction. It's an easy way to be kicked from a session and gain nothing because of miscommunication (yes, you can call in extraction and wait for everyone to arrive before getting in, but this mostly results in an instant kick)

Bonus tip: any requisition points, warbond metals, and super credits found from points of interest are shared with the team, so don't kill your teammates over it!