First you have to select the species you want to submit (or enter the species ID (shortname) of the species by hand).
Then click on 'READ INFO' to extract some needed data from that species. The extracted data will show up in the nearby edit field.
Select the form you want to use for submission.
Press fill the form. This replaces all search strings (which are defined in 'Your private data' and next to 'READ INFO') with their values and shows the filled-out form in the third textbox.
At last enter a name, press save file and send that file by email to some submission address.