Doing that is quite easy but you might have to make this change when you update codoforum.
Open sites/default/themes/default/templates/forum/topics.tpl
Around line 42, you will see that there is commented code. Uncommenting that (remove asterisk) will do what you want.
This is the line you are looking for:
{*if $I->loggedIn() and $canCreateTopicInAtleastOneCategory*}
Doing that is quite easy but you might have to make this change when you update codoforum.
Open sites/default/themes/default/templates/forum/topics.tpl
Around line 42, you will see that there is commented code. Uncommenting that (remove asterisk) will do what you want.
This is the line you are looking for:
````
{*if $I->loggedIn() and $canCreateTopicInAtleastOneCategory*}
````
Necessity is the mother of all inventions!