javascript - Trying to select button and frame with Xpath on google plus -

i trying automate task using google plus circles. program i'm using uses xpath target right element in order click button.

however, i'm not able select right target since google seems use advanced anti scraping measures (that's interpretation of situation anyhow, i'm on junior level on xpaths).

example page:

my task select add cirkles, first clicking button , clicking 1 of alternatives. in order see button have logged in google plus way.

i've tried xpaths already, have not worked:

attempt one:
first click: //div[@id='contentpanel']//div
second click: //div[@id=':4o.lbl']//div

attempt two:
first click: //*[@id="root"]/div/div
second click: //div[@id=':4o.lbl']//div

any appreciated.

best regards, cnapback