Removing Delete contact / Lead option - User Role

I would like to know how to prevent all user to delete leasd, accouts, … in user role. I need an example if some has one.

Thank you

You need to use Security Groups and Roles management.

Check this out for a tutorial that you can adapt to your case:

https://www.sugaroutfitters.com/docs/securitysuite/example-of-a-typical-setup