Retirement tax questions

You just make a withdrawal from the 457 plan.  If you are over 59 1/2 there is no penalty.  You will get a 1099R at the end of the year to enter into your tax return.   They will probably take out a set amount of withholding or you can tell them what percentage to take out.  Be careful.  It will all be taxable and may push you into a higher tax bracket.