Preseed users

We are going to be using preseed for the first time this cycle and I want to make sure we use it right so sorry if these questions are tmi. 1. Did you use it in the vagina or on the penis? If in the vagina, how much did you use? How far in did you insert the applicator? Did you insert it or did your significant other? 2. Does using it on the penis do the same thing?

We have never even used lubricant (pre ttc days), we’ve not found it necessary. So I am very new at this. Any advice would be great!