Setup the Lasso iframe manually
Lasso is only enabled on default form for Accounts and Leads. In case you have a custom form, Lasso will have to be manually added. Don't worry, it's very simple.
- Open you form in edit mode and open the
Form propertieswindow.

- Include the two scripts
Lasso LoaderandLasso Configuration File.

- Under
Event handlers, add the functionlasso.setupfrom theLasso Loaderscript and enable it.

- Back on the form, include the
Lasso Idfield somewhere. Hide the field unless you have a need for it to be visible. - Add a tab with a section that has an iframe in it. Make sure to include the text
lassoin the name of the iframe, e.g. "iframe_lasso". You can se the iframe URL tohttps://apps.lassox.com/static/pages/blank.html, and finally uncheck the checkbox to "Restrict cross frame scripting, where supported".
That's it! Lasso should now load automatically in the new tab, when a Company or Lead is opened.