Split MY CLOUD HOME 4To

Good evening,
We just bought a 4TB MY CLOUD HOME and we would like to be able to split it into 2, 3, or 4 parts to dedicate each part to one or more users and / or 1 or more subjects …

Example :
1 personal part and 1 professional part for me and 1 personal part and 1 professional part for my wife …

How to do ?

Thank you for your help and have a nice evening

Regards,

@SYB-PE
User Manual: My Cloud Home and My Cloud Home Duo (westerndigital.com)