Change same Subscription with different portal users

Hi portal gurus,

we are using SAP EP SPS13 (we will soon patch it to SPS15), we would like to manage the same Subscription on the same KM folder with different portal users (subscription authors).

Is it possible?

We have different portal users that have defined different subscriptions in different KM folders and they would like to manage subscriptions written from other colleagues.

Could anybody hel me?

Thanks

Jerry