In D&D 3.5e there was a rule that would allow the caster of a touch spell to cast it on six different individuals if they used a full round action to do so (emphasis added):
Holding the Charge
If you don’t discharge the spell in the round when you cast the spell, you can hold the discharge of the spell (hold the charge) indefinitely. You can continue to make touch attacks round after round. You can touch one friend as a standard action or up to six friends as a full-round action. If you touch anything or anyone while holding a charge, even unintentionally, the spell discharges. If you cast another spell, the touch spell dissipates. Alternatively, you may make a normal unarmed attack (or an attack with a natural weapon) while holding a charge. In this case, you aren’t considered armed and you provoke attacks of opportunity as normal for the attack. (If your unarmed attack or natural weapon attack doesn’t provoke attacks of opportunity, neither does this attack.) If the attack hits, you deal normal damage for your unarmed attack or natural weapon and the spell discharges. If the attack misses, you are still holding the charge.
Let's say that you are a cleric and you have cure wounds, can you have your party stand around you after a battle and use a full round action to administer cure light wounds to six willing subjects?
Does D&D 5e still officially have this rule or one like it?