In Menu Manager, add a new menu (does not matter what you call it as no-one will see it)

Within that menu, add a BF Survey Menu Item Type, and setup the parameters as required.

Once saved, go back into menu item, and copy contents from link field, for example:
index.php?option=com_bfsurvey_pro&view=bfsurveypro&catid=51
Take note of ID field.

Create a new article, or edit an existing one.
Select some text and create a link
Link will be what you copied from menu item, with &Itemid=xx appended (where xx is the ID for that menu item). For example:
index.php?option=com_bfsurvey_pro&view=bfsurveypro&catid=51&Itemid=70

Save your article.