help for a good solution in robot mechanics

I need help from a friend who understands
mechanics
in the picture , I show with
I aim for the robot to both rotate
and go up and down. in base.
How an I design it?
On you explain in detail the product
selection and mechonical logic?
Hou con I perform two controls
ot sine time.
Other picture I aim to setup a system with 28 bys steppe
motor and shufts for rotation.
Then the motor at number will rotute
number 2 as shown in the figure.
Detalied explonution of what kind systen
I setup, number 3 returns as shown in
the figure.
material Choice and a workoble
example
(worm geer striveture)(structure)