There should be a box for you to toggle between Static, ETA and mempool.
I don't get those options unfortunately. Its just a sliding scale in Electrum for Android which alters the Target (Mempool) value from lowest 10MB from the tip to 0.1MB from the tip.
I note a few of you mentioned "replaceable". How do I ensure that's enable for my transfer? There aren't any options I can see in the pay section to do this?
Do you have the ability to get electrum installed on your computer? If so, there is the option to set the fee rate for your transactions.
If you are not concerned about a quick confirmation, you can choose a lower fee rate. If the rate is too low, your transaction may never confirm.
You can visit
https://bitcoinfees.earn.com/ to get an idea as to what fee rate you might want to pay.