You can merge a summary template with an Inventory template within the 'Report Editor'
From the Home dashboard and under the heading 'Operations' select 'All Jobs'
Select your Job from the list and from the Job Details screen select 'Report Editor' from the tabs at the top of the screen.
In the 'Report Editor' select 'Rooms' from the left hand side of the screen.
Click on the 'Merge Rooms' button under the heading 'Room Actions'
Select from each of the drop-down menus for the two room sections you wish to merge, these merged rooms will appear in your list. i.e. you may want to merge your Entrance room summary section with your Entrance room Inventory section.