Hello @Wasapon 

I don't think you can achieve the first Sat of every month with the context of you running daily fulls. 

If you change your schedule to be Incremental backups through the week and fulls run on Saturday then you can do extended retention for the first full of the month. 

Kind regards

Albert Williams

Hi Albert

Thanks for your suggestion. 

Hello @Wasapon 

If your question is answered please mark the thread as so please.

Kind regards

Albert Williams

While it may not be possible at the Storage Policy Copy level, you could use Schedule Policies to meet your requirement by creating a First Saturday of the Month schedule, and using the Advanced > Media > Job Retention options to extend retention. 

@Erase4ndReuseMedia  Great idea! I didn't even think of doing it this way. Love the work.

Kind regards

Albert Williams

Hi @Erase4ndReuseMedia 

This solution very helpful. Thank you