The Salesforce Lightning® Experience combines the new Lightning Design System, Lightning App Builder and Lightning Components to enable anyone to quickly and easily create modern enterprise apps within Salesforce®.

To enable you to put your Conga Grid℠ Visualforce pages into Salesforce Tabs and on Lightning Page Layouts:

1. Go to your Grid Visualforce page
2. Check the Available for Lightning Experience, Lightning Communities, and the mobile app checkbox

You will now be able to put your Grid℠ Visualforce pages into Salesforce Tabs and on Lightning Page Layouts