How to deed my premium home prim allowance to my maninland land group please?

[Alwin Alcott]

you can do that at the last tab of the group profile

enter the m2 and click OK

[Alwin Alcott]

you can do that at the last tab of the group profile

enter the m2 and click OK

[Amethyst Jetaime]

You can't deed a Linden Home to a group, only set it to a group.  

You can't share the prims from one parcel on a sim with another parcel on another sim.  Both parcels have to be on the same sim to share prims.

You can abandon your Linden Home, buy land on the same sim as your land group and not pay tier on the first 512sqm of land.  You can then deed that land to your group to add its prims to the group land.