In order to have the website as simple as possible, there is only one entry instead of two. You do not have to think which software to use between conjugator and finder.
Now, when you enter a verb, it is conjugated if it is an infinitive verb. If it is a conjugated verb, it displays the corresponding verb.
Just to remind you, Finder was created in order to find the verb when you only have a conjugated verb. For instance, when you enter "gît", the website finds "gésir" as the verb. Then, you can click on it to have to complete conjugation.