How to switch arch linux to lts kernel?

I'm running a headless server installation of arch linux. The high rate of kernel upgrades caused me some maintainance headache and I therefore wish to switch to the lts kernel . I already installed the linux-lts and linux-lts-headers packages. Now, I got both kernels installed but I'm a bit clueless how to continue from here. The docs explain : > [...] you will need to update your bootloader's configuration file to use the LTS kernel and ram disk: vmlinuz-linux-lts and initramfs-linux-lts.img. I already located them in the boot section: 0 ✓ root@host ~ $ ll /boot/ total 85M 4,0K drwxr-xr-x 4 root root 4,0K 21. Mai 13:46 ./ 4,0K drwxr-xr-x 17 root root 4,0K 4. Apr 15:08 ../ 4,0K drwxr-xr-x 6 root root 4,0K 4. Apr 14:50 grub/ 27M -rw-r--r-- 1 root root 27M 20. Mai 17:01 initramfs-linux-fallback.img 12M -rw-r--r-- 1 root root 12M 20. Mai 17:01 initramfs-linux.img 27M -rw-r--r-- 1 root root 27M 21. Mai 13:46 initramfs-linux-lts-fallback.img 12M -rw-r--r-- 1 root root 12M 21. Mai 13:46 initramfs-linux-lts.img 16K drwx------ 2 root root 16K 4. Apr 14:47 lost+found/ 4,3M -rw-r--r-- 1 root root 4,3M 11. Mai 22:23 vmlinuz-linux 4,2M -rw-r--r-- 1 root root 4,2M 19. Mai 21:05 vmlinuz-linux-lts Now, I already found entries pointing to the non-lts kernel in the grub.cfg but the header tells me not to edit this file. It points me to the utility grub-mkconfig instead but I can not figure out how to use this tool to tell grub which kernel and ramdisk to use. How to switch archlinux with grub to the lts kernel? What else do I have to be cautious about when switching the kernel?