Also disable "delete account " option for authors.
Do you mean Remove Account? If so, you can edit profile_options macro removing this part of the code:
<link><a href="[n.visitor.remove_account_path/]"><t>Remove Your Account</t></a></link>
<hint><t>Remove your account and all your posts from <t.subject><n.root_node.subject/></t.subject>.</t></hint>
I was just trying to modify the profile_options in a new forum as described above, as I've done this in the past on another forum, but I'm getting the following message:
Error: macro or method for 'put_in_head' not found in [basic, nabble, ad] stack = [basic, nabble, ad]
in put_in_head(custom_tweak:profile_options:2) - <n.put_in_head.> in (custom_tweak:profile_options:1) - <override_macro name="profile_options">
And I get this error even if I make no changes to the code - that is, I select "Override this macro", then "Save Changes"