Over here its more simple:
4 Captain
3 FO (from first day line training on with 200 hours total
)
2 not used
1 not used
Oh, and its platinum all right, (well, so they say) just another remembrance of our times as a 100% BA owned company a few years back.
Other companies use different schemes with cabin crew having a few stripes as well so there is no real rule to it, at least no official one.