Did one of those lately.
AP/AT off, say "GA" and whatever flaps your bird requests, shove up some thrust and put in a decent pitch, at pos clb rate ask for the gear up, level the bird at the 1000 or 1500ft.
Follow the briefed GA proc and tell the PM (or PNF, whatever) to clean up the automatics and try to bring the FMA to what you want, then engage AP/AT and the relevant modes.
It's called flying ....... unfortunately seems rocket science nowadays!