Go to Form Builder > Speaker Registration Form (If you do not see this form under Form builder, it may not have been created in your platform. See this tutorial for creating Speaker registration form) and click on a Field Type to create a field eg. Speaker Bio, to display speaker's bio in the public profile.
Make sure to select "Display this field in public profile" option so as to display this field in the speaker's public profile.
Go to Contacts and click on Speakers tab. Click on the name of the Speaker whose profile you want to update.
Enter the information under the newly created Bio field and click on Save. The speaker's public profile should now include the bio. Go to another speaker's profile to add information under his/her Bio field.
