Reporting outside of The end screen?

If there isn't one can we add a tool to report players that are trolling/ trying to force a skip in champ select? Currently you have to play a game and usually a take a hit to your LP before you can report them and that kind of behavior doesn't even fit what is in the categories available.

Here is what happened today: Our JG was displaying as their intended champ. Our support banned Shy. Asked why in the chat but doesn't respond. Support gets to pick their champ they choose with and after they lock some one left champ select.

I have had this happen a lot lately I assume it is people who don't want to play a role they have been autofilled and don't want to dodge. So they troll the champ select to try and make some one else dodge for them.

In this case the player in question was in the next game I played and he was playing on the other team (even though he was assigned ADC he went mid and forced out the who was supposed to be there) the funny thing is he basically carried but it still wasn't fair what he did to his team. So you can ruin some ones experience without being toxic in the chat or int-ing so how do you report that?