How-To: Set your neuron to follow another neuron
From Internet Computer Wiki
This article shows users how to set their neurons to follow by using the NNS Frontend dapp.
Navigate to the neurons tab and select the neuron you wish from whom you wish to set to follow other neurons.
2. Scroll to the section on FOLLOWING
3.Select "follow neurons"
4.Select a topic to follow
In this case, we are selecting "All topics except governance"