QUES: The foundation often organizes different events and seminars

correct the punctuation.

CORRECTED: The foundation often organizes different events and seminars.

QUES: Yes People outside your company can access your site even without a Google Apps account

correct the punctuation.

CORRECTED: Yes. People outside your company can access your site, even without a Google Apps account.

QUES: Such a tone is absolutely impermissible in the Red Army

correct the punctuation.

CORRECTED:
Such a tone is absolutely impermissible in the Red Army.