WorkspaceMember 

Team Collaboration inside a workspace.

Example

You (Admin) create:

{
    "workspace_id": 1,
    "name": "Mani Workspace"
}

Now you want your team members to work with you.

You add:

Palak → Content Writer
Amit → Editor
Ravi → Analyst

..............................................................................................................................

i have one fb account and there are multiple clients on that and each cleint hve fb page

Yes. This is exactly how most social media management tools work.

Your Setup

You have:

Your Facebook Account
        │
        ├── Client A Page
        ├── Client B Page
        ├── Client C Page
        ├── Client D Page
        └── Client E Page

As long as your Facebook account has access to those Pages (Admin, Full Control, or appropriate Page permissions), your application can manage them.

Recommended Database Structure
Brands
brands
id	name
1	Shantisadan
2	ABC Hospital
3	XYZ Eye Care

Each client = one Brand.

Social Accounts
social_accounts
id	brand_id	provider	account_id	account_name
1	1	facebook	224395820764696	Shantisadan
2	2	facebook	112233445566	ABC Hospital
3	3	facebook	998877665544	XYZ Eye Care

Each Facebook Page is linked to a Brand.