Wa alaikumsalam wa rahmatullaahi wa barakatuhu, There is no adhan for rawatib sunnah. You pray it like any other prayer and you may read whatever you wish in it.

Read more

Wa alaikum salam wa rahmatullaahi, They can pray as soon as the time of dhuhur is due. This means if the adhan of thuhur is given everyday at 12:15, they can pray on a Friday at this time.

Read more