I'm pretty sure the answers yes.....I lifted this from the sticky on spending Avios - section 3:

Tickets can be issued to any name you request but you, the BAEC member retain control of the booking and must pay all the taxes, fees, and surcharges assessed against the ticket. So if you have booked a ticket for someone other than yourself to travel and that person wishes to make a change to the booking, you’ll need to contact your local BAEC service centre to request the change. In many cases, the change can be done online.

Members belonging to a Household Account (HHA) may only use book redemptions for themselves and other members in their HHA.

...does this mean I need to step out of my HHA? The two sentences don't sit easily together?

I'd like to book three club class flights to AMS for myself and two friends at the end of Jan - would appreciate some guidance please?

Tried it online and the only options are members of my HHA.
Just a thought - could I add them in time to book this?