I have never read a manual of Dopus4, I go by instinct, then as always happens by mistake you get the right parameter

Study the keys and you'll see that it will be easy to understand, where you do not arrive ask, however, there should be a manual somewhere.
Yes I attach here the config of Dopus, but I have to complete it when the TIFF datatypes will arrive, at the moment it seems to work well converting to JPG, PNG and IFF formats, other formats tested do not seem to work such as GIF, TGA and PCX.
The configured keys for DTConv are located on the second bank, you have to click on "Nex Bank" to access or back out.
There is only one key configured (Blue) with "add name to image" converted.