First or all, let's deal with terms:
* the Implied permissions are managed using the relationships, and that can't be change.
* the Implicit permissions are managed against classes, relationships and properties and can be adjusted using SDK
Now back to your question. Because your class delivered from the WorkItem, the implied permissions will work out of box. You can refer the list of such permissions here: https://learn.microsoft.com/en-us/system-center/scsm/user-role-profiles?view=sc-sm-2022#implied-permissions
The Affected User relationship is in the list, so it should work.
If you want to provide access to other users, then you can use Implied permissions. Profile Editor mentioned in my blog post now published under Operaio brand, you can download it here: [Operaio - Free Software][https://support.operaio.ch/EndUser/Items/View/7bf13e1e-994b-63a9-fd14-c42a8f1984cf/b02f1837-6326-6756-ccbe-2c65bc94b974/f43f7cc5-8319-0859-4262-e0f3a1a3a78f]