Share your expectations
As a leader you must ask yourself the question - "what is my definition of effective" and make decisions based on that.
Share your processed thinking with the team
The easiest way to do this is with interaction from the group.
The whiteboard tool called MIRO helps facilitate that. Here is a link to their template in their tool, with their own list of how to use it: https://miro.com/templates/bulls-eye-diagram/ (Links to an external site.)
Leaders must continuously build an environment of trust, growth, and professional support to enable employees to thrive in their work. It's like a bank that needs little deposits. Every 1:1, team meeting, email, instant message is the leader communicating their brand and all of those micro interactions help pave the way for team satisfaction and consensus.