Users with admin access are able to see a list of adders in V2. Click Settings > Pricing > Adders to get to the list.
On this page, you can see the adder name, status, the pricing model that each adder is active on, auto vs manual apply, customer visibility, pricing option type, and pricing details. Click into an adder to get further details.
Each deal type has a pricing model attached. If the adder is not added to the pricing model, it will not show on deals using that model.