Is this the present GIRM, or the new one that is about to be published?
That’s the basic, underlying text of the Latin GIRM, the normative
editio typica.
But Redemptionis Sacramentum 90 makes it clear, referring to GIRM 160 that deals with Communion posture, that what the Conferences have determined had to be approved by recognitio and it has been made clear by other documents that recognitio was only granted as long as there was a guarantee that those who wished to kneel would still be allowed to do so.
This is true, but that doesn’t make kneeling the norm and standing something that is permitted only by indult.
Ultimately, this derives from
Eucharisticum Mysterium (1967), which contained the following provision:
34. The Way of Receiving Communion
a) In accordance with the custom of the Church, Communion may be received by the faithful either kneeling or standing. One or the other way is to be chosen, according to the decision of the episcopal conference, bearing in mind all the circumstances, above all the number of the faithful and the arrangement of the churches. The faithful should willingly adopt the method indicated by their pastors, so that Communion may truly be a sign of the brotherly union of all those who share in the same table of the Lord.
b) When the faithful communicate kneeling, no other sign of reverence toward the Blessed Sacrament is required, since kneeling is itself a sign of adoration.
When they receive Communion standing, it is strongly recommended that, coming up in procession, they should make a sign of reverence before receiving the Blessed Sacrament. This should be done at the right time and place, so that the order of people going to and from Communion may not be disrupted.
As you can see, there is no norm, and if the bishops of a country wanted to determine that Communion is to be received
standing, that would also require the approval of the CDW.