Multiple Signature in one user Office 365

Hello All,

i have an email group admin@abc.com  in Office 365, that email will be used for serveral user like : 

- user A

- user B

- user C

Note : license Office 365 would be E1 and Bussiness Basic.

all user using different PC, i have to setup signature using different user in each PC.

any solution for my issue?

Thankyou