Is it obligatory to forbid worshippers during the Friday sermon from interlocking their fingers and extending their legs towards the Qibla?

It is disliked to interlace fingers during the Friday sermon. The person doing so should be told to stop before or after the sermon, but not during it, as that would be a diversion. The Imam is an exception, as he is permitted to command and forbid during the sermon. As for extending one's legs towards the Qibla, it is permissible according to some scholars and disliked according to others.