I also assembled the bike rack for the garage. As you can see, I have quite a bit of tidying and sorting to do before it can be placed where it's going to go.
I also have a ground anchor I'll place near the rack once everything is in place.
Which rack did you buy and what is your opinion of it? It looks like this one but that seems to get bad reviews?
I've done things the other way round. I have the ground anchor in place but no rack. I now have 4 or sometimes 5 bikes chained up via a 2m chain with the first against the garage wall and the rest leaning against the next bike. It's sometimes like a 3d puzzle trying to get them all in place, with the pedals and bars overlapping neatly and without bending mudguard stays etc etc!
It seems a rack would make things easier by supporting the bikes but also it might reduce the spacing options - you can't move a bike back a little for its bars to clear its neighbour's. Also one of the bikes has 2.6" knobbly tyres which won't fit between the bars of the linked rack (stated 5.5cm gap).



