Not able to edit or add operations While Testing the Manage Work Definition Using the Redwood UI

Not able to edit or add operations While Testing the Manage Work Definition Using the Redwood UI.

When we open Work Definition from the screen- (Manage Work Definitions), a Redwood UI starts appearing.

So when we conduct a search for any item, the results are shown but when we are clicking upon one of the the definition, in the next follow-up screen we can see all the operations, resources.

There is + sign in oeartions sections> We are not able to click on the Add option or edit the operations details, like what we can do in classic UI.

Please help.