How to set up dual-boot Windows with Archlinux?

I have a fairly recent laptop with ArchLinux (64 bits) as the only OS installed. My motherboard is UEFI and I have a 512 GB SSD. I specify that secure boot is disabled, that I use GRUB as bootloader and that my Archlinux system is encrypted and runs in BTRFS.

How can I install Windows 11 while keeping my current Archlinux system so that I have 2 entries on GRUB?

If possible, I'd like Windows to be encrypted too (via veracrypt for example), and I'd like to have a buffer partition (encrypted too) to store data usable by my two OSes (accessible by both).

Here's my current partition scheme:

❯ lsblkNAME          MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINTSloop0           7:0    0  73,9M  1 loop  /var/lib/snapd/snap/core22/817loop1           7:1    0  73,9M  1 loop  /var/lib/snapd/snap/core22/858loop2           7:2    0  73,7M  1 loop  /var/lib/snapd/snap/searchsploit/334loop3           7:3    0  73,8M  1 loop  /var/lib/snapd/snap/searchsploit/352loop4           7:4    0  53,3M  1 loop  /var/lib/snapd/snap/snapd/19457nvme0n1       259:0    0 476,9G  0 disk  ├─nvme0n1p1   259:1    0     1G  0 part  /boot└─nvme0n1p2   259:2    0 475,9G  0 part  └─cryptroot 254:0    0 475,9G  0 crypt /var/log                                         /home                                         /swap                                         /.snapshots                                         /

Many thanks in advance.