Hi mate

sorry to intrude into this, with my little experience over here you can only but work on one signature campaign per user. therefore you have to choose one to leave the other which will require you to write to the manager your currently promoting his campaign for leaving his signature campaign to the newly launched campaign, otherwise you can't just leave the campaign without the knowledge of the manager.

So you have to choose wisely sir, And still on still wait for both to get feedback to you, if is the same manager then pm him to settle all.
Thank you.