Goto: Tools -> Preferences -> Fees
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Ftalkimg.com%2Fimages%2F2023%2F11%2F15%2Fzx4rG.png&t=665&c=FQ2LF6azdj1elw)
Tick "Dynamic Fees" and also "Edit fees manually"... and I'd recommend setting the "Replace-By-Fee" option to "Always":
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Ftalkimg.com%2Fimages%2F2023%2F11%2F15%2Fzx5OD.png&t=665&c=gdmTmH5a0JFFwQ)
When you go to send a transaction, it should enable you to use the slider, but also see the "absolute" fee:
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Ftalkimg.com%2Fimages%2F2023%2F11%2F15%2Fzx9Cf.png&t=665&c=KmTm1PMJANSZpA)
For the record, I highly recommend you don't just type a number in unless you are sure you have calculated it correctly. Otherwise you are likely to end up setting a fee that is too low and your transaction will get stuck.