As a provider, you can provide data assets before connecting with your consumers' nodes but there will be no one to consume them. First, you have to connect with them and there are two ways to do that.
Add consumer through UI 1. Go to "Advanced" -> "Peers" tab
2. Enter the consumer enode address to the "Add peer" input
3. Consumer's node should be added to the connected peers
Add consumer through static-nodes.json file 1. Go to your local NDM package 2. Access nethermind/Data/static-nodes.json 3. Add consumer's enode address to the .json file (remember about the proper formatting - an array of strings) 4. Run NDM 5. You should see in the logs that your node is connecting to the given enode