Remove old conferences

This is maybe strange but I maid a lot of test after install with many conferences.
And I would like to remove some of them in the main page…
I don’t find any anmin mode that allow to remove some conferences ?
Is there a way to do that ?

Found the answer…
Nothing to do with jitsi.
But for the one who want to know it is in the “Data & Cookie” of firefox…
=> Just have to clean the firefox recording!