na_arbitrator settings text

The text states

Click submit to reset your access database; this may be necessary right after installing na_arbitrator or a module that relies on na_arbitrator. NOTE: If you are using a node_access module that does not use the na_arbitrator API, its access control records will be destroyed! If you are even the slightest bit unsure, please back up your database BEFORE pressing submit here! YOU CANNOT UNDO THIS! This process may take some time to run.

yet the page doesn't contain a 'submit' button as such, just a 'save configuration' button.