I dunno if this the right section for help.

But whn i replace the EMBED Codes on the New Post of my blog.
it says


* Illegal tag: embed
* (Note: To get rid of the above validation warnings, you can deactivate unwanted validation rules in your Group settings.)
* Invalid content.

I dont know where at Group Settings?

anyone can help?
my Pleasure to you

EDITED:

im wrong section