I'm looking for a way to give a specific user the ability to make changes to Lead and Opportunity via the "Object Manager" screen without giving them access to full admin permissions.
I've seen this question, but the answer there suggests delegated administration, and the options for that only control editing custom objects so that doesn't seem to be what I require. Someone in the comments on that question suggested some permission in the normal permissions system but I can't find one. Note that even if delegated administration gave access to edit all standard objects by default, this is not what I want.
What is the solution for this? Is there one?