Trailing stop after up some pips and question trailing step

Is there a way to implement a trailing stop after you are up a certain amount of pips? I want to set an initial SL but not have it move until I am up a certain a mount of pips. For instance, set the SL at 30 pips, then when I'm up 20 pips have the SL move up to breakeven and then be a trailing stop which moves as I gain pips. Also, how does the trailing stop work? I have read about it but can't figure it out. If I set it to 25 pips, I thought it would break even at 25 pips, then when I hit 50 pips it would move to 25 pips, but it doesn't seem to work like that for me.

A standard trailing, will start trailing at 25pips (your example), then trail up your SL pip by pip ... until price retraces back on the SL.

This standard TS is available in your MT4 platform. Right click on the order in the terminal "trade" tab ... Then set the trailing as per your need.

Can you set an initial stop loss that will not move until the trailing stop kicks in?

Yes