At every level of participating in democracy there are ways that groups decide, including, but not limited to:
· Majority-rule votes
· Consensus
· Advisory votes
As a species constantly attempting to learn better ways to decide based on either mistakes that seem correctable by better forms of decision-making (or an anti-democratic wish to selfishly manipulate the current decision-making method), we are endlessly experimenting with permutations of these basic forms.
For instance, Stanford researcher Jaqueline Harding explains one variant, "Transitive proxy voting (or ‘liquid democracy’) is a novel form of collective decision making. It is often framed as an attractive hybrid of direct and representative democracy, purporting to balance pragmatic factors with the ability to represent a population" (p. 69).
Or, in the case of consensus decision-making, which some bodies mandate, there are myriad forms of modified consensus, sometimes shading into a variant of majority rule that calls for a super-majority requirement to pass certain measures.
Advisory voting feeds into any form of decision-making in that it informs the actual decision-makers. Some organizations rarely use opinions coming from their advisory councils, while others virtually always follow the advice passed on to them. If, for instance, an advisory council undertakes a serious investigation into a problem before the actual deciders, and if that advisory council is composed of trusted experts who commit to a rigorous process featuring wise assessments and due diligence, the actual deciders (possibly a Board of Directors of a highly influential think tank, or possibly even elected officials themselves) may almost never do much additional information-gathering before taking the course of action recommended by the advisory council.
In some cases the rules are so arcane they need a special official to rule on obscure scenarios (e.g., the US Senate Parliamentarian, who decides if all elements in a Reconciliation bill can be allowed to proceed).
For the ultimate (arguably) in democratic decision-making, a serious consensus process is the deliberative most thorough and accounts for all parties. The disadvantages of such a process is that it may be used to delay urgent business or it may be used reflexively when a more command-and-control executive decision would be far more efficient for more minor matters.
Learning the process of consensus decision-making facilitation is a combination of following tested methods, e.g., Larry Dressler's (2006) brief explainer, and gaining the experiential expertise necessary to practice it well.
References
Dressler, Larry (2006). Consensus through conversation: How to achieve high-commitment decisions. San Francisco, CA: Berrett-Koehler.
Harding, J. (2022). Proxy selection in transitive proxy voting. Social Choice & Welfare, 58(1), 69–99. https://doi-org.proxy.lib.pdx.edu/10.1007/s00355-021-01345-8