Is it permissible to perform Friday Prayer in two shifts for two partners in a shop, or must they pray it together at the first prescribed time?

The questioner and his partner must attend the first Friday prayer, because for one of them to remain in the shop for selling or other such activities is forbidden for whoever is obligated to attend the Friday prayer upon the last call for the first Friday prayer announced in the city. The eminent scholar Al-Bahuti stated in "Kashshaf Al-Qina'" that if there are two or more جامعs (places where Friday prayers are held) in a town, then selling is not permissible before the call to prayer of the other جامع, due to the generality of the verse.