Use your drill and two wood screws to hold the frame of the ladder to the header of your support structure.
How to install a header in the attic.
One non load bearing and one load bearing.
Nail the first lvl to the joists then nail the second to the first and so on.
In cases where they are installed perpendicular to joists figure 3 some joists will need to be cut and tied in to other joists with 2 x 6 or 2 x 8 headers.
Position the header between the joists so it rests on the backside of the drywall and its exposed face is flush with the edge of the opening.
Install the beam one lvl at a time.
Now you can open the ladder to continue the installation.
Next we spread a bunch of construction adhesive on the installed lvl then lifted the second lvl into place.
Spread heavy duty construction adhesive between the beams for extra strength.
Cut a piece of 2 x 4 or 2 x 6 lumber to fit snugly between the joists directly above the newly cut edge of the opening.
Most attic stairs will be installed parallel to the ceiling joists figure 2.
Fasten the header to the joist at each end with screws.
Begin to secure the ladder by pre drilling four 1 8 inch pilot holes at the top of the frame.
Nudge the bottom of the jack studs into place pro tip use some scrap 2x material to prevent damage to your stud then nail the jack studs to the king studs and nail the header to the stud and toenail it into the top plate.