How would you separate Ag+, Pb +2, Zn +2, Mg +2

Hello,
I have to make a quick flowchart for chemistry showing how to seperate Ag+, Pb +2, Zn +2, Mg +2.
The problem is, even after all the reading, I have no idea on how to do that.

The cations used were: NH4OH (6M), NaOH (1M) and HCl (3M)

Can anyone help me?

HCl will ppt down Ag+ and Pb++
Zn+2 reacts with both HCl and NaOH.
AgCl is yellow.