How to add "Layouts" options on the Application "flows" for Connections page

Summary:

Me > Connections > Search for a Person

Settings and Actions > Administration > Edit Page in Visual Builder

The Components area seems to be greyed out. And the drag of the Layouts options (from the left) and drop on the Profile Page Designer (on the right) isn’t working. Please refer to the screenshots in the word file attached.

Please advise if there is a way to add these Layouts options like ‘Education Items’, ‘Assignments’, etc. on the profile page in Connections. 

Content (required):

We want to add additional field on the connections page and are using Visual Builder to do so. In Visual Builder, we see options like ‘Education Items’, ‘Assignments’, etc. in the "Layouts" options on the left, which can work for some of our requirements, if there is a way to get them added on the Application "flows" for Connections. We need a way to get them added to our connections profile page.