I've been looking over these sections:
Installation_test_matrix#Custom_storage_configuration
Installation_test_matrix#Advanced_custom_storage_configuration
and noticed that some test cases might have a wrong milestone defined.

1. Testcase_partitioning_custom_btrfs is marked as Final, and the associated release criterion links to Fedora_33_Final_Release_Criteria#disk-layouts. But I believe it's covered by Fedora_33_Beta_Release_Criteria#Custom_partitioning and therefore should be marked as Beta.

2. Testcase_partitioning_blivet_btrfs is the same case as above

3. Testcase_partitioning_custom_with_swap is marked as Optional and doesn't have an associated criterion set, while I believe it's covered by Fedora_33_Final_Release_Criteria#Disk_layouts and should be marked as Final.

4. Testcase_partitioning_blivet_with_swap is the same case as above

I'm happy to make the required changes, I just need confirmation that I'm not misunderstanding something.
Ping @adamwill