Might be possible to start backups on agents one per time within same policy?

Good morning all,

  i'm running a policy to backup a SAP db(oracle) for two servers, A and B.

I would like to start the tasks on a server A first ,and when finished, start the backup on server B, mutual exclusive, one per time (not matter which).

I know i can split policy and so on, but i would know if it is possible to have this thing done without change anything.

In the past i've also limited jobs to run simultaneously, but i've found normaly it will start 3 tasks for server A and 1 for server B and it is not what i wanted.

Thank you.

Kind regards,

Michele