Add a new item, select the Excavation unit from the Resource Template list

Pay attention to the mandatory fields.

Follow the rules when renaming the identifier and the title!

Click on the Items button to select related items if they exist.

Remember to connect them afterwards if they do not exist yet.

Once you have filled in the information in all the fields, click on the button Add to save the record. 

To visualise your record in the front view, click on the red arrow on the right panel