Changing fees
Read about fees on the fees page.
Setting fees in LND
This sets the fees to LOW:
lncli updatechanpolicy --base_fee_msat 0 --fee_rate 0.000001 --time_lock_delta 10
Help
See Channel policy what it all means.
Setting fees in c-lightning
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add info how c-lightning does it
There are other settings in c-lightning probably.