To enable custom fees, do the following: Tools -> Preferences -> Check "Edit fees manually";
Thank you. But if the fee is like 50 cents, will my transfer be broadcasted to the network in the same day? I'm afraid it will take like a week. Is this price the avarage in the Bitcoin market?
Here are some tips:
a. ConfirmTX.com is a transaction accelerator that charges a fixed amount of $4 for each transaction confirmation. But they are accelerating transactions up to 500 bytes for free. You should try it and see if you can get your transaction through in ~8 hours or less.
b. ViaBTC accelerator[1] is free but seems to be very slow at the moment. Also, they only accepts a limited amount of transactions per hour.
[1] https://pool.viabtc.com/tools/txaccelerator/
Very useful. I just tested with a low fee in Electrum and confirmtx and I already got 2 confirmations in less than a minute. Thanks again.