We can toggle whether a node has 0 or 1 vote towards quorum membership.

How

Through UI > using the Configure Cluster Quorum Wizard > Select Voting configuration.

Through Powershell

(Get-ClusterNode $node4).NodeWeight = 0

references:

What is Quorum Vote Weight in a Windows Server Failover Cluster?

Essentially, as cluster nodes drop out of membership, you may reduce the number of remaining votes left in the cluster. This is nicknamed the “last man standing” quorum model – so long as one voter is online, the cluster stays running. If the same node frequently crashes, then you can assign this node 0 votes so that it essentially has no impact on the rest of the cluster. However, if different nodes lose availability at different times, it is a little harder to change the quorum weight as you need a more advanced PowerShell script which can dynamically change the node vote weight for different nodes.