trying to add a pushbutton to my circuit please help me

in my world of electrical wholesaling for 35 years and all the electronic circuits I have ever read a 'p/b' has always been denoted to being a pushbutton of some description.

all I am asking is for some help, if you can't or don't want to, I don't want to see comments like that.
just a simple I don't know, but I know a man who can! would of sufficed.

p.s I don't mean to offend anyone, but helpful comments will be greatly appreciated to a newbie in this field