Currently, active calculators are situated in the mainboard under the My Calculator tab when you go to the Cost Calculator Builder plugin:
And here you can see the calculator id, calculator name, Calculator Short-code, and also Edit, Duplicate or Delete actions.
To edit the ready created or the imported default calculators, just click the pencil icon and make your changes on them.
When you click the editing icon, you will be directed to the calculator board to make edits.
If you need a copy of the sample calculator, click the third copy icon to duplicate it.
After clicking that icon, you will see the duplicated calculator with a changed id.
Deleting is done using the trash icon on the right side.
As you can see, there is no "Photography" calculator with the id=2468 in the calculators' list after doing deletion.
You can select multiple calculators and apply Bulk Action to them: