Community engagement is a core element of any research effort affecting a large group of people.

This requires researchers to become part of the community and community members to become part of the research team, creating a unique working and learning environment through the research.

When using it to find the solution to a problem it is the process in which one uses the public's opinion and understanding to come to a conclusion. The greater the number of people the more the accuracy of finding the most accepted mean or measure. This can be done through surveys, and interviews.

Crowdfunding is a kind of method to get monetary help from the community as well.

There is no set way to go about this, but rather it depends on what your purpose is and what you are most comfortable with.