How to show opening in Kerb in Open Road Designer?

Hello All, 

I wish to show the opening in the road side kerb at 10 m interval to drain off the surface water,  how can I model it in Open road designer modelling? Also,  How can I create a temple for this? Plz guide.

I am using 2019 Release 2 Update 7 version of ORD. 

Thank you. 

Regards,  

Aniruddha