What are the regulations for asking others to supplicate, and does the supplicant's intimate address to the one supplicated for contradict the merit of supplicating in their absence?

It is permissible to ask others to supplicate on one's behalf, provided that one does not make it a habit and become negligent in supplicating for oneself, and that one does not fear that the person asked might become conceited. The intention behind such a request should be to benefit oneself and the person asked, because the angels say "Ameen" to his supplication if he supplicates for his brother in his absence. There is no harm in supplicating in front of him or writing it down, but supplicating in his absence (bi ẓahr al-ghayb) is distinguished by the virtue mentioned in the Hadith: "Whoever supplicates for his brother in his absence, the angel appointed to him says: 'Ameen, and to you be the same.'" And "bi ẓahr al-ghayb" means in the absence and privacy of the one being supplicated for, because it is more indicative of sincerity. This virtue is attained even if one supplicates for a group or for all Muslims. Some of the predecessors, if they wanted to supplicate for themselves, would supplicate for their Muslim brother with that same supplication, so that it would be answered and they would receive the like of it. Supplicating for one who is absent is akin to sending blessings upon the Prophet, peace be upon him, and seeking the Wasilah for him, for that is for the benefit of the supplicator.